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Safety, Tolerability and Pharmacokinetics of Etelcalcetide in Healthy Male Volunteers

A Double-Blind, Randomized, Placebo-Controlled, Rising Single Intravenous Dose Study to Assess the Safety, Tolerability and Pharmacokinetics of KAI-4169 in Healthy Male Volunteers

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01134549
Enrollment
32
Registered
2010-06-02
Start date
2010-06-09
Completion date
2010-07-31
Last updated
2017-04-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hyperparathyroidism, Secondary

Brief summary

The purpose of this study is to characterize the safety and tolerability of etelcalcetide in healthy young males.

Interventions

Administered as a single intravenous (IV) injection

DRUGPlacebo

Administered as a single intravenous (IV) injection

Sponsors

Nucleus Network Ltd
CollaboratorOTHER
KAI Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
MALE
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Male between 18 and 45 years of age who have provided written informed consent * Subject is judged to be in good health based on medical history, physical examination, and routine laboratory tests

Exclusion criteria

* History or presence of any significant acute or chronic illness (e.g., cardiovascular, pulmonary, hepatic, renal, hematologic, gastrointestinal, endocrine, immunologic, dermatologic, or neurologic disease) according to the investigator * History of any ongoing medical condition requiring treatment with prescription medication * History of asthma, severe allergies including skin reactions or prior anaphylactic type reactions * Clinically significant abnormalities on screening clinical examination or laboratory safety tests * History of drug or alcohol abuse

Design outcomes

Primary

MeasureTime frame
Number of Participants With Adverse EventsFrom the first dose of study drug through 7 days.

Secondary

MeasureTime frameDescription
Percent Change From Baseline in Plasma Ionized CalciumBaseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose
Change From Baseline in Serum Total CalciumBaseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose
Change From Baseline in Serum Corrected CalciumBaseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose
Change From Baseline in Serum PhosphateBaseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose
Percent Change From Baseline in Serum CalcitoninBaseline and 10 minutes, 30 minutes, 3, 12, 24, and 48 hours post-dose
Percent Change From Baseline in Serum 1,25 (OH)2 Vitamin DBaseline and 12, 24, and 48 hours post-dose
Maximum Observed Concentration (Cmax) for EtelcalcetideBlood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.Plasma samples were analyzed for levels of etelcalcetide for pharmacokinetic (PK) analysis using a validated liquid chromatography/mass spectrometry (LC/MS) method.
Percent Change From Baseline in Serum Parathyroid HormoneBaseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose
Observed Area Under the Concentration-time Curve Extrapolated to Infinity (AUCINFobs) for EtelcalcetideBlood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.
Percent Observed Area Under the Concentration-time Curve Extrapolated to Infinity Resulting From Extrapolation to Concentration of 0 ng/mL (AUC%Extrapobs)Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.
Terminal Elimination Rate Constant (λz) for EtelcalcetideBlood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.
Half-life Associated With the Terminal (Log-linear) Elimination Phase (HLλz) for EtelcalcetideBlood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.
Total Body Clearance (CL) for EtelcalcetideBlood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.
Volume of Distribution at Steady State for EtelcalcetideBlood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.
Number of Participants With Antibodies to EtelcalcetideSamples for antibody analysis were collected pre-dose and between days 7-12 and days 21-28.Serum samples were analyzed for antibodies against etelcalcetide using a validated enzyme-linked immunosorbent assay (ELISA).
Area Under the Concentration-time Curve Between the Time of Dose and the Last Time Point (AUCall) for EtelcalcetideBlood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Countries

Australia

Participant flow

Recruitment details

This study was conducted at one clinical center in Australia.

Pre-assignment details

The study included 4 cohorts: 0.5 mg, 2 mg, 5 mg and 10 mg. Eight participants were enrolled into each cohort and were randomized 6:2 to receive etelcalcetide or placebo.

Participants by arm

ArmCount
Pooled Placebo
Participants received a single dose of placebo administered by intravenous injection.
8
Etelcalcetide 0.5 mg
Participants received a single dose of 0.5 mg etelcalcetide administered by intravenous injection.
6
Etelcalcetide 2 mg
Participants received a single dose of 2 mg etelcalcetide administered by intravenous injection.
6
Etelcalcetide 5 mg
Participants received a single dose of 5 mg etelcalcetide administered by intravenous injection.
6
Etelcalcetide 10 mg
Participants received a single dose of 10 mg etelcalcetide administered by intravenous injection.
6
Total32

Baseline characteristics

CharacteristicPooled PlaceboEtelcalcetide 0.5 mgEtelcalcetide 2 mgEtelcalcetide 5 mgEtelcalcetide 10 mgTotal
Age, Continuous22.4 years
STANDARD_DEVIATION 3.5
27.8 years
STANDARD_DEVIATION 8.9
26.8 years
STANDARD_DEVIATION 4.9
24.2 years
STANDARD_DEVIATION 4.4
26.0 years
STANDARD_DEVIATION 6.2
25.3 years
STANDARD_DEVIATION 5.7
Ethnicity
Hispanic or Latino
0 Participants0 Participants1 Participants0 Participants0 Participants1 Participants
Ethnicity
Not Hispanic or Latino
8 Participants6 Participants5 Participants6 Participants6 Participants31 Participants
Race
Asian
2 Participants2 Participants0 Participants2 Participants2 Participants8 Participants
Race
Other
0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants
Race
White
6 Participants4 Participants6 Participants3 Participants4 Participants23 Participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
8 Participants6 Participants6 Participants6 Participants6 Participants32 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —— / —
other
Total, other adverse events
2 / 80 / 61 / 62 / 62 / 65 / 24
serious
Total, serious adverse events
0 / 80 / 60 / 60 / 60 / 60 / 24

Outcome results

Primary

Number of Participants With Adverse Events

Time frame: From the first dose of study drug through 7 days.

Population: The modified intent-to-treat (MITT) population consisted of all participants who were randomized and received study medication.

ArmMeasureGroupValue (NUMBER)
Pooled PlaceboNumber of Participants With Adverse EventsTreatment-related adverse events0 participants
Pooled PlaceboNumber of Participants With Adverse EventsAny adverse event2 participants
Pooled PlaceboNumber of Participants With Adverse EventsDeaths0 participants
Pooled PlaceboNumber of Participants With Adverse EventsSerious adverse events0 participants
Pooled PlaceboNumber of Participants With Adverse EventsWithdrawals due to adverse events0 participants
Etelcalcetide 0.5 mgNumber of Participants With Adverse EventsTreatment-related adverse events0 participants
Etelcalcetide 0.5 mgNumber of Participants With Adverse EventsWithdrawals due to adverse events0 participants
Etelcalcetide 0.5 mgNumber of Participants With Adverse EventsSerious adverse events0 participants
Etelcalcetide 0.5 mgNumber of Participants With Adverse EventsDeaths0 participants
Etelcalcetide 0.5 mgNumber of Participants With Adverse EventsAny adverse event0 participants
Etelcalcetide 2 mgNumber of Participants With Adverse EventsWithdrawals due to adverse events0 participants
Etelcalcetide 2 mgNumber of Participants With Adverse EventsAny adverse event1 participants
Etelcalcetide 2 mgNumber of Participants With Adverse EventsSerious adverse events0 participants
Etelcalcetide 2 mgNumber of Participants With Adverse EventsTreatment-related adverse events1 participants
Etelcalcetide 2 mgNumber of Participants With Adverse EventsDeaths0 participants
Etelcalcetide 5 mgNumber of Participants With Adverse EventsDeaths0 participants
Etelcalcetide 5 mgNumber of Participants With Adverse EventsAny adverse event2 participants
Etelcalcetide 5 mgNumber of Participants With Adverse EventsTreatment-related adverse events1 participants
Etelcalcetide 5 mgNumber of Participants With Adverse EventsWithdrawals due to adverse events0 participants
Etelcalcetide 5 mgNumber of Participants With Adverse EventsSerious adverse events0 participants
Etelcalcetide 10 mgNumber of Participants With Adverse EventsWithdrawals due to adverse events0 participants
Etelcalcetide 10 mgNumber of Participants With Adverse EventsTreatment-related adverse events1 participants
Etelcalcetide 10 mgNumber of Participants With Adverse EventsAny adverse event2 participants
Etelcalcetide 10 mgNumber of Participants With Adverse EventsDeaths0 participants
Etelcalcetide 10 mgNumber of Participants With Adverse EventsSerious adverse events0 participants
Secondary

Area Under the Concentration-time Curve Between the Time of Dose and the Last Time Point (AUCall) for Etelcalcetide

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboArea Under the Concentration-time Curve Between the Time of Dose and the Last Time Point (AUCall) for Etelcalcetide81.1 hr*μg/LStandard Deviation 11.7
Etelcalcetide 0.5 mgArea Under the Concentration-time Curve Between the Time of Dose and the Last Time Point (AUCall) for Etelcalcetide256 hr*μg/LStandard Deviation 32.5
Etelcalcetide 2 mgArea Under the Concentration-time Curve Between the Time of Dose and the Last Time Point (AUCall) for Etelcalcetide544 hr*μg/LStandard Deviation 57.7
Etelcalcetide 5 mgArea Under the Concentration-time Curve Between the Time of Dose and the Last Time Point (AUCall) for Etelcalcetide1130 hr*μg/LStandard Deviation 129
Secondary

Change From Baseline in Serum Corrected Calcium

Time frame: Baseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose

Population: Modified intent-to-treat population with available data at each time point

ArmMeasureGroupValue (MEAN)Dispersion
Pooled PlaceboChange From Baseline in Serum Corrected Calcium6 Hours-0.024 mmol/LStandard Deviation 0.04
Pooled PlaceboChange From Baseline in Serum Corrected Calcium30 Minutes-0.018 mmol/LStandard Deviation 0.036
Pooled PlaceboChange From Baseline in Serum Corrected Calcium1 Hour-0.024 mmol/LStandard Deviation 0.039
Pooled PlaceboChange From Baseline in Serum Corrected Calcium3 Hours-0.001 mmol/LStandard Deviation 0.035
Pooled PlaceboChange From Baseline in Serum Corrected Calcium10 Minutes-0.019 mmol/LStandard Deviation 0.047
Pooled PlaceboChange From Baseline in Serum Corrected Calcium9 Hours-0.010 mmol/LStandard Deviation 0.041
Pooled PlaceboChange From Baseline in Serum Corrected Calcium12 Hours-0.032 mmol/LStandard Deviation 0.033
Pooled PlaceboChange From Baseline in Serum Corrected Calcium15 Hours-0.154 mmol/LStandard Deviation 0.309
Pooled PlaceboChange From Baseline in Serum Corrected Calcium18 Hours-0.067 mmol/LStandard Deviation 0.076
Pooled PlaceboChange From Baseline in Serum Corrected Calcium21 Hours-0.035 mmol/LStandard Deviation 0.04
Pooled PlaceboChange From Baseline in Serum Corrected Calcium24 Hours-0.015 mmol/LStandard Deviation 0.026
Pooled PlaceboChange From Baseline in Serum Corrected Calcium27 Hours0.040 mmol/LStandard Deviation 0.041
Pooled PlaceboChange From Baseline in Serum Corrected Calcium30 Hours0.008 mmol/LStandard Deviation 0.035
Pooled PlaceboChange From Baseline in Serum Corrected Calcium36 Hours-0.025 mmol/LStandard Deviation 0.037
Pooled PlaceboChange From Baseline in Serum Corrected Calcium42 Hours0.001 mmol/LStandard Deviation 0.06
Pooled PlaceboChange From Baseline in Serum Corrected Calcium48 Hours0.020 mmol/LStandard Deviation 0.033
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium36 Hours0.008 mmol/LStandard Deviation 0.046
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium21 Hours0.012 mmol/LStandard Deviation 0.09
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium18 Hours-0.007 mmol/LStandard Deviation 0.063
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium42 Hours-0.023 mmol/LStandard Deviation 0.061
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium15 Hours-0.052 mmol/LStandard Deviation 0.072
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium6 Hours-0.048 mmol/LStandard Deviation 0.056
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium3 Hours-0.002 mmol/LStandard Deviation 0.043
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium30 Minutes-0.008 mmol/LStandard Deviation 0.079
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium10 Minutes-0.008 mmol/LStandard Deviation 0.081
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium30 Hours0.035 mmol/LStandard Deviation 0.078
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium9 Hours-0.102 mmol/LStandard Deviation 0.079
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium1 Hour-0.033 mmol/LStandard Deviation 0.073
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium48 Hours-0.007 mmol/LStandard Deviation 0.048
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium27 Hours0.030 mmol/LStandard Deviation 0.085
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium24 Hours-0.030 mmol/LStandard Deviation 0.048
Etelcalcetide 0.5 mgChange From Baseline in Serum Corrected Calcium12 Hours-0.035 mmol/LStandard Deviation 0.048
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium36 Hours-0.038 mmol/LStandard Deviation 0.081
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium3 Hours-0.017 mmol/LStandard Deviation 0.048
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium6 Hours0.008 mmol/LStandard Deviation 0.066
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium9 Hours-0.120 mmol/LStandard Deviation 0.218
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium12 Hours-0.067 mmol/LStandard Deviation 0.019
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium15 Hours-0.107 mmol/LStandard Deviation 0.039
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium42 Hours0.022 mmol/LStandard Deviation 0.026
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium18 Hours-0.100 mmol/LStandard Deviation 0.024
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium21 Hours-0.090 mmol/LStandard Deviation 0.023
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium24 Hours-0.018 mmol/LStandard Deviation 0.036
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium27 Hours0.038 mmol/LStandard Deviation 0.056
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium30 Hours0.007 mmol/LStandard Deviation 0.046
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium10 Minutes-0.022 mmol/LStandard Deviation 0.063
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium48 Hours0.015 mmol/LStandard Deviation 0.022
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium30 Minutes-0.018 mmol/LStandard Deviation 0.062
Etelcalcetide 2 mgChange From Baseline in Serum Corrected Calcium1 Hour-0.023 mmol/LStandard Deviation 0.056
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium21 Hours-0.150 mmol/LStandard Deviation 0.072
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium48 Hours-0.048 mmol/LStandard Deviation 0.034
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium24 Hours-0.156 mmol/LStandard Deviation 0.031
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium36 Hours-0.103 mmol/LStandard Deviation 0.068
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium27 Hours-0.027 mmol/LStandard Deviation 0.05
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium9 Hours-0.126 mmol/LStandard Deviation 0.043
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium30 Hours-0.125 mmol/LStandard Deviation 0.067
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium3 Hours-0.025 mmol/LStandard Deviation 0.066
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium10 Minutes-0.017 mmol/LStandard Deviation 0.053
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium1 Hour-0.017 mmol/LStandard Deviation 0.058
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium15 Hours-0.213 mmol/LStandard Deviation 0.064
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium6 Hours-0.045 mmol/LStandard Deviation 0.058
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium18 Hours-0.187 mmol/LStandard Deviation 0.058
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium42 Hours-0.056 mmol/LStandard Deviation 0.021
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium12 Hours-0.173 mmol/LStandard Deviation 0.026
Etelcalcetide 5 mgChange From Baseline in Serum Corrected Calcium30 Minutes-0.023 mmol/LStandard Deviation 0.041
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium30 Hours-0.138 mmol/LStandard Deviation 0.064
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium21 Hours-0.228 mmol/LStandard Deviation 0.056
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium42 Hours-0.067 mmol/LStandard Deviation 0.036
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium6 Hours-0.130 mmol/LStandard Deviation 0.069
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium30 Minutes-0.042 mmol/LStandard Deviation 0.037
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium15 Hours-0.255 mmol/LStandard Deviation 0.078
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium24 Hours-0.214 mmol/LStandard Deviation 0.063
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium48 Hours-0.087 mmol/LStandard Deviation 0.03
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium9 Hours-0.163 mmol/LStandard Deviation 0.069
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium18 Hours-0.272 mmol/LStandard Deviation 0.1
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium10 Minutes-0.030 mmol/LStandard Deviation 0.049
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium27 Hours-0.115 mmol/LStandard Deviation 0.055
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium12 Hours-0.228 mmol/LStandard Deviation 0.042
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium36 Hours-0.157 mmol/LStandard Deviation 0.051
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium3 Hours-0.043 mmol/LStandard Deviation 0.028
Etelcalcetide 10 mgChange From Baseline in Serum Corrected Calcium1 Hour-0.042 mmol/LStandard Deviation 0.026
Secondary

Change From Baseline in Serum Phosphate

Time frame: Baseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose

Population: Modified intent-to-treat population with available data at each time point

ArmMeasureGroupValue (MEAN)Dispersion
Pooled PlaceboChange From Baseline in Serum Phosphate6 Hours0.008 mmol/LStandard Deviation 0.153
Pooled PlaceboChange From Baseline in Serum Phosphate30 Minutes-0.041 mmol/LStandard Deviation 0.067
Pooled PlaceboChange From Baseline in Serum Phosphate1 Hour-0.055 mmol/LStandard Deviation 0.079
Pooled PlaceboChange From Baseline in Serum Phosphate3 Hours0.000 mmol/LStandard Deviation 0.093
Pooled PlaceboChange From Baseline in Serum Phosphate10 Minutes-0.033 mmol/LStandard Deviation 0.035
Pooled PlaceboChange From Baseline in Serum Phosphate9 Hours0.130 mmol/LStandard Deviation 0.174
Pooled PlaceboChange From Baseline in Serum Phosphate12 Hours0.015 mmol/LStandard Deviation 0.086
Pooled PlaceboChange From Baseline in Serum Phosphate15 Hours0.228 mmol/LStandard Deviation 0.251
Pooled PlaceboChange From Baseline in Serum Phosphate18 Hours0.381 mmol/LStandard Deviation 0.15
Pooled PlaceboChange From Baseline in Serum Phosphate21 Hours0.278 mmol/LStandard Deviation 0.164
Pooled PlaceboChange From Baseline in Serum Phosphate24 Hours-0.003 mmol/LStandard Deviation 0.079
Pooled PlaceboChange From Baseline in Serum Phosphate27 Hours-0.085 mmol/LStandard Deviation 0.156
Pooled PlaceboChange From Baseline in Serum Phosphate30 Hours0.060 mmol/LStandard Deviation 0.21
Pooled PlaceboChange From Baseline in Serum Phosphate36 Hours0.116 mmol/LStandard Deviation 0.127
Pooled PlaceboChange From Baseline in Serum Phosphate42 Hours0.335 mmol/LStandard Deviation 0.155
Pooled PlaceboChange From Baseline in Serum Phosphate48 Hours0.044 mmol/LStandard Deviation 0.107
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate6 Hours-0.088 mmol/LStandard Deviation 0.109
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate24 Hours0.093 mmol/LStandard Deviation 0.099
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate21 Hours0.315 mmol/LStandard Deviation 0.132
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate42 Hours0.343 mmol/LStandard Deviation 0.123
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate15 Hours0.258 mmol/LStandard Deviation 0.132
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate1 Hour-0.067 mmol/LStandard Deviation 0.124
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate18 Hours0.357 mmol/LStandard Deviation 0.12
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate3 Hours-0.013 mmol/LStandard Deviation 0.14
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate30 Minutes-0.055 mmol/LStandard Deviation 0.085
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate10 Minutes0.007 mmol/LStandard Deviation 0.094
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate9 Hours0.128 mmol/LStandard Deviation 0.122
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate36 Hours0.162 mmol/LStandard Deviation 0.13
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate30 Hours0.085 mmol/LStandard Deviation 0.137
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate48 Hours0.100 mmol/LStandard Deviation 0.087
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate27 Hours-0.003 mmol/LStandard Deviation 0.124
Etelcalcetide 0.5 mgChange From Baseline in Serum Phosphate12 Hours0.043 mmol/LStandard Deviation 0.123
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate30 Minutes-0.067 mmol/LStandard Deviation 0.055
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate3 Hours0.005 mmol/LStandard Deviation 0.096
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate36 Hours0.045 mmol/LStandard Deviation 0.082
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate6 Hours0.098 mmol/LStandard Deviation 0.123
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate9 Hours0.100 mmol/LStandard Deviation 0.118
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate12 Hours-0.090 mmol/LStandard Deviation 0.165
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate15 Hours0.188 mmol/LStandard Deviation 0.18
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate42 Hours0.342 mmol/LStandard Deviation 0.076
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate18 Hours0.307 mmol/LStandard Deviation 0.12
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate21 Hours0.312 mmol/LStandard Deviation 0.065
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate24 Hours0.053 mmol/LStandard Deviation 0.079
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate27 Hours-0.127 mmol/LStandard Deviation 0.044
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate30 Hours0.130 mmol/LStandard Deviation 0.157
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate10 Minutes-0.065 mmol/LStandard Deviation 0.059
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate48 Hours0.027 mmol/LStandard Deviation 0.115
Etelcalcetide 2 mgChange From Baseline in Serum Phosphate1 Hour-0.058 mmol/LStandard Deviation 0.039
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate21 Hours0.296 mmol/LStandard Deviation 0.129
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate12 Hours-0.018 mmol/LStandard Deviation 0.164
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate24 Hours0.158 mmol/LStandard Deviation 0.126
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate48 Hours0.142 mmol/LStandard Deviation 0.162
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate27 Hours-0.015 mmol/LStandard Deviation 0.215
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate9 Hours0.162 mmol/LStandard Deviation 0.135
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate3 Hours0.110 mmol/LStandard Deviation 0.104
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate30 Hours0.148 mmol/LStandard Deviation 0.242
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate36 Hours0.072 mmol/LStandard Deviation 0.106
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate1 Hour-0.010 mmol/LStandard Deviation 0.045
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate10 Minutes-0.010 mmol/LStandard Deviation 0.031
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate6 Hours0.058 mmol/LStandard Deviation 0.237
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate15 Hours0.220 mmol/LStandard Deviation 0.139
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate30 Minutes-0.017 mmol/LStandard Deviation 0.042
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate18 Hours0.375 mmol/LStandard Deviation 0.113
Etelcalcetide 5 mgChange From Baseline in Serum Phosphate42 Hours0.398 mmol/LStandard Deviation 0.222
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate12 Hours0.028 mmol/LStandard Deviation 0.143
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate21 Hours0.518 mmol/LStandard Deviation 0.12
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate42 Hours0.480 mmol/LStandard Deviation 0.235
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate36 Hours0.280 mmol/LStandard Deviation 0.21
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate1 Hour0.005 mmol/LStandard Deviation 0.035
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate18 Hours0.538 mmol/LStandard Deviation 0.1
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate24 Hours0.116 mmol/LStandard Deviation 0.096
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate48 Hours0.160 mmol/LStandard Deviation 0.111
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate30 Minutes0.012 mmol/LStandard Deviation 0.056
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate3 Hours0.060 mmol/LStandard Deviation 0.083
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate10 Minutes0.022 mmol/LStandard Deviation 0.042
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate27 Hours0.065 mmol/LStandard Deviation 0.141
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate9 Hours0.275 mmol/LStandard Deviation 0.126
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate30 Hours0.388 mmol/LStandard Deviation 0.087
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate6 Hours0.146 mmol/LStandard Deviation 0.142
Etelcalcetide 10 mgChange From Baseline in Serum Phosphate15 Hours0.355 mmol/LStandard Deviation 0.141
Secondary

Change From Baseline in Serum Total Calcium

Time frame: Baseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose

Population: Modified intent-to-treat population with available data at each time point

ArmMeasureGroupValue (MEAN)Dispersion
Pooled PlaceboChange From Baseline in Serum Total Calcium6 Hours-0.024 mmol/LStandard Deviation 0.04
Pooled PlaceboChange From Baseline in Serum Total Calcium30 Minutes-0.018 mmol/LStandard Deviation 0.036
Pooled PlaceboChange From Baseline in Serum Total Calcium1 Hour-0.024 mmol/LStandard Deviation 0.039
Pooled PlaceboChange From Baseline in Serum Total Calcium3 Hours-0.001 mmol/LStandard Deviation 0.035
Pooled PlaceboChange From Baseline in Serum Total Calcium10 Minutes-0.019 mmol/LStandard Deviation 0.047
Pooled PlaceboChange From Baseline in Serum Total Calcium9 Hours-0.010 mmol/LStandard Deviation 0.041
Pooled PlaceboChange From Baseline in Serum Total Calcium12 Hours-0.055 mmol/LStandard Deviation 0.038
Pooled PlaceboChange From Baseline in Serum Total Calcium15 Hours-0.176 mmol/LStandard Deviation 0.324
Pooled PlaceboChange From Baseline in Serum Total Calcium18 Hours-0.090 mmol/LStandard Deviation 0.074
Pooled PlaceboChange From Baseline in Serum Total Calcium21 Hours-0.058 mmol/LStandard Deviation 0.038
Pooled PlaceboChange From Baseline in Serum Total Calcium24 Hours-0.025 mmol/LStandard Deviation 0.03
Pooled PlaceboChange From Baseline in Serum Total Calcium27 Hours0.030 mmol/LStandard Deviation 0.037
Pooled PlaceboChange From Baseline in Serum Total Calcium30 Hours-0.003 mmol/LStandard Deviation 0.036
Pooled PlaceboChange From Baseline in Serum Total Calcium36 Hours-0.035 mmol/LStandard Deviation 0.035
Pooled PlaceboChange From Baseline in Serum Total Calcium42 Hours-0.009 mmol/LStandard Deviation 0.055
Pooled PlaceboChange From Baseline in Serum Total Calcium48 Hours0.013 mmol/LStandard Deviation 0.042
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium36 Hours-0.002 mmol/LStandard Deviation 0.074
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium21 Hours-0.012 mmol/LStandard Deviation 0.113
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium18 Hours-0.030 mmol/LStandard Deviation 0.077
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium42 Hours-0.033 mmol/LStandard Deviation 0.085
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium15 Hours-0.075 mmol/LStandard Deviation 0.105
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium6 Hours-0.065 mmol/LStandard Deviation 0.09
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium3 Hours-0.018 mmol/LStandard Deviation 0.074
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium30 Minutes-0.008 mmol/LStandard Deviation 0.079
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium10 Minutes-0.008 mmol/LStandard Deviation 0.081
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium30 Hours0.025 mmol/LStandard Deviation 0.102
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium9 Hours-0.122 mmol/LStandard Deviation 0.117
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium1 Hour-0.033 mmol/LStandard Deviation 0.073
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium48 Hours-0.010 mmol/LStandard Deviation 0.093
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium27 Hours0.020 mmol/LStandard Deviation 0.106
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium24 Hours-0.040 mmol/LStandard Deviation 0.076
Etelcalcetide 0.5 mgChange From Baseline in Serum Total Calcium12 Hours-0.058 mmol/LStandard Deviation 0.08
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium36 Hours-0.058 mmol/LStandard Deviation 0.084
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium3 Hours-0.017 mmol/LStandard Deviation 0.048
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium6 Hours0.008 mmol/LStandard Deviation 0.066
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium9 Hours-0.120 mmol/LStandard Deviation 0.218
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium12 Hours-0.067 mmol/LStandard Deviation 0.024
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium15 Hours-0.107 mmol/LStandard Deviation 0.039
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium42 Hours0.002 mmol/LStandard Deviation 0.029
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium18 Hours-0.100 mmol/LStandard Deviation 0.027
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium21 Hours-0.090 mmol/LStandard Deviation 0.041
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium24 Hours-0.038 mmol/LStandard Deviation 0.061
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium27 Hours0.018 mmol/LStandard Deviation 0.08
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium30 Hours-0.013 mmol/LStandard Deviation 0.063
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium10 Minutes-0.022 mmol/LStandard Deviation 0.063
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium48 Hours0.018 mmol/LStandard Deviation 0.038
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium30 Minutes-0.018 mmol/LStandard Deviation 0.062
Etelcalcetide 2 mgChange From Baseline in Serum Total Calcium1 Hour-0.023 mmol/LStandard Deviation 0.056
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium21 Hours-0.174 mmol/LStandard Deviation 0.04
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium48 Hours-0.085 mmol/LStandard Deviation 0.036
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium24 Hours-0.200 mmol/LStandard Deviation 0.036
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium36 Hours-0.143 mmol/LStandard Deviation 0.077
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium27 Hours-0.070 mmol/LStandard Deviation 0.057
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium9 Hours-0.126 mmol/LStandard Deviation 0.043
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium30 Hours-0.165 mmol/LStandard Deviation 0.071
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium3 Hours-0.025 mmol/LStandard Deviation 0.066
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium10 Minutes-0.017 mmol/LStandard Deviation 0.053
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium1 Hour-0.017 mmol/LStandard Deviation 0.058
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium15 Hours-0.243 mmol/LStandard Deviation 0.064
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium6 Hours-0.045 mmol/LStandard Deviation 0.058
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium18 Hours-0.217 mmol/LStandard Deviation 0.045
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium42 Hours-0.100 mmol/LStandard Deviation 0.021
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium12 Hours-0.203 mmol/LStandard Deviation 0.041
Etelcalcetide 5 mgChange From Baseline in Serum Total Calcium30 Minutes-0.023 mmol/LStandard Deviation 0.041
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium30 Hours-0.182 mmol/LStandard Deviation 0.057
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium21 Hours-0.285 mmol/LStandard Deviation 0.039
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium42 Hours-0.120 mmol/LStandard Deviation 0.045
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium6 Hours-0.138 mmol/LStandard Deviation 0.061
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium30 Minutes-0.042 mmol/LStandard Deviation 0.037
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium15 Hours-0.312 mmol/LStandard Deviation 0.056
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium24 Hours-0.270 mmol/LStandard Deviation 0.072
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium48 Hours-0.107 mmol/LStandard Deviation 0.047
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium9 Hours-0.170 mmol/LStandard Deviation 0.065
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium18 Hours-0.328 mmol/LStandard Deviation 0.075
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium10 Minutes-0.030 mmol/LStandard Deviation 0.049
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium27 Hours-0.165 mmol/LStandard Deviation 0.058
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium12 Hours-0.285 mmol/LStandard Deviation 0.079
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium36 Hours-0.210 mmol/LStandard Deviation 0.04
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium3 Hours-0.050 mmol/LStandard Deviation 0.032
Etelcalcetide 10 mgChange From Baseline in Serum Total Calcium1 Hour-0.042 mmol/LStandard Deviation 0.026
Secondary

Half-life Associated With the Terminal (Log-linear) Elimination Phase (HLλz) for Etelcalcetide

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboHalf-life Associated With the Terminal (Log-linear) Elimination Phase (HLλz) for Etelcalcetide19.5 hoursStandard Deviation 1.35
Etelcalcetide 0.5 mgHalf-life Associated With the Terminal (Log-linear) Elimination Phase (HLλz) for Etelcalcetide20.0 hoursStandard Deviation 2.25
Etelcalcetide 2 mgHalf-life Associated With the Terminal (Log-linear) Elimination Phase (HLλz) for Etelcalcetide18.6 hoursStandard Deviation 2.51
Etelcalcetide 5 mgHalf-life Associated With the Terminal (Log-linear) Elimination Phase (HLλz) for Etelcalcetide18.4 hoursStandard Deviation 2.21
Secondary

Maximum Observed Concentration (Cmax) for Etelcalcetide

Plasma samples were analyzed for levels of etelcalcetide for pharmacokinetic (PK) analysis using a validated liquid chromatography/mass spectrometry (LC/MS) method.

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboMaximum Observed Concentration (Cmax) for Etelcalcetide43.5 μg/LStandard Deviation 7.86
Etelcalcetide 0.5 mgMaximum Observed Concentration (Cmax) for Etelcalcetide171 μg/LStandard Deviation 35.6
Etelcalcetide 2 mgMaximum Observed Concentration (Cmax) for Etelcalcetide280 μg/LStandard Deviation 59.3
Etelcalcetide 5 mgMaximum Observed Concentration (Cmax) for Etelcalcetide583 μg/LStandard Deviation 144
Secondary

Number of Participants With Antibodies to Etelcalcetide

Serum samples were analyzed for antibodies against etelcalcetide using a validated enzyme-linked immunosorbent assay (ELISA).

Time frame: Samples for antibody analysis were collected pre-dose and between days 7-12 and days 21-28.

Population: Participants who received etelcalcetide

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Pooled PlaceboNumber of Participants With Antibodies to Etelcalcetide0 Participants
Etelcalcetide 0.5 mgNumber of Participants With Antibodies to Etelcalcetide0 Participants
Etelcalcetide 2 mgNumber of Participants With Antibodies to Etelcalcetide0 Participants
Etelcalcetide 5 mgNumber of Participants With Antibodies to Etelcalcetide0 Participants
Secondary

Observed Area Under the Concentration-time Curve Extrapolated to Infinity (AUCINFobs) for Etelcalcetide

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboObserved Area Under the Concentration-time Curve Extrapolated to Infinity (AUCINFobs) for Etelcalcetide94.3 hr*μg/LStandard Deviation 12.5
Etelcalcetide 0.5 mgObserved Area Under the Concentration-time Curve Extrapolated to Infinity (AUCINFobs) for Etelcalcetide294 hr*μg/LStandard Deviation 34.1
Etelcalcetide 2 mgObserved Area Under the Concentration-time Curve Extrapolated to Infinity (AUCINFobs) for Etelcalcetide623 hr*μg/LStandard Deviation 71.5
Etelcalcetide 5 mgObserved Area Under the Concentration-time Curve Extrapolated to Infinity (AUCINFobs) for Etelcalcetide1290 hr*μg/LStandard Deviation 116
Secondary

Percent Change From Baseline in Plasma Ionized Calcium

Time frame: Baseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose

Population: Modified intent-to-treat population

ArmMeasureGroupValue (MEAN)Dispersion
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium6 Hours-1.79 percent changeStandard Deviation 3.32
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium30 Minutes-1.27 percent changeStandard Deviation 3.67
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium1 Hour-1.15 percent changeStandard Deviation 4.62
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium3 Hours-1.72 percent changeStandard Deviation 4.85
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium10 Minutes-1.48 percent changeStandard Deviation 3.55
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium9 Hours-4.68 percent changeStandard Deviation 3.76
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium12 Hours-7.14 percent changeStandard Deviation 3.93
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium15 Hours-3.71 percent changeStandard Deviation 4.25
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium18 Hours-3.38 percent changeStandard Deviation 4.24
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium21 Hours-1.11 percent changeStandard Deviation 3.56
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium24 Hours-0.70 percent changeStandard Deviation 4.64
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium27 Hours-1.78 percent changeStandard Deviation 4.12
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium30 Hours0.17 percent changeStandard Deviation 4.11
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium36 Hours-5.02 percent changeStandard Deviation 5.4
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium42 Hours-1.38 percent changeStandard Deviation 3.56
Pooled PlaceboPercent Change From Baseline in Plasma Ionized Calcium48 Hours2.12 percent changeStandard Deviation 4.24
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium36 Hours-3.28 percent changeStandard Deviation 5.39
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium21 Hours3.90 percent changeStandard Deviation 3.6
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium18 Hours-1.62 percent changeStandard Deviation 5.07
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium42 Hours0.55 percent changeStandard Deviation 3.44
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium15 Hours-2.53 percent changeStandard Deviation 2.98
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium6 Hours-1.36 percent changeStandard Deviation 2.66
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium3 Hours0.73 percent changeStandard Deviation 1.4
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium30 Minutes-0.51 percent changeStandard Deviation 3.54
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium10 Minutes0.98 percent changeStandard Deviation 2.79
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium30 Hours2.51 percent changeStandard Deviation 3.84
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium9 Hours-3.39 percent changeStandard Deviation 5
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium1 Hour1.15 percent changeStandard Deviation 3.08
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium48 Hours2.17 percent changeStandard Deviation 2.91
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium27 Hours2.62 percent changeStandard Deviation 3.73
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium24 Hours3.77 percent changeStandard Deviation 1.93
Etelcalcetide 0.5 mgPercent Change From Baseline in Plasma Ionized Calcium12 Hours-2.83 percent changeStandard Deviation 3.22
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium36 Hours-7.68 percent changeStandard Deviation 3.35
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium3 Hours-5.86 percent changeStandard Deviation 2.52
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium6 Hours-4.88 percent changeStandard Deviation 2.58
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium9 Hours-9.51 percent changeStandard Deviation 5.4
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium12 Hours-9.54 percent changeStandard Deviation 2.17
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium15 Hours-10.41 percent changeStandard Deviation 1.32
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium42 Hours0.14 percent changeStandard Deviation 1.32
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium18 Hours-9.00 percent changeStandard Deviation 1.18
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium21 Hours-6.38 percent changeStandard Deviation 1.74
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium24 Hours-2.45 percent changeStandard Deviation 1.95
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium27 Hours-6.26 percent changeStandard Deviation 2.74
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium30 Hours-5.82 percent changeStandard Deviation 2.06
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium10 Minutes-3.94 percent changeStandard Deviation 2.33
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium48 Hours-0.42 percent changeStandard Deviation 1.83
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium30 Minutes-2.46 percent changeStandard Deviation 3.2
Etelcalcetide 2 mgPercent Change From Baseline in Plasma Ionized Calcium1 Hour-4.50 percent changeStandard Deviation 2.65
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium21 Hours-13.97 percent changeStandard Deviation 2.48
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium48 Hours-6.22 percent changeStandard Deviation 3.17
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium24 Hours-11.83 percent changeStandard Deviation 4.46
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium36 Hours-13.69 percent changeStandard Deviation 4.43
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium27 Hours-7.71 percent changeStandard Deviation 2.28
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium9 Hours-16.45 percent changeStandard Deviation 2.55
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium30 Hours-9.65 percent changeStandard Deviation 2.73
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium3 Hours-6.65 percent changeStandard Deviation 2.31
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium10 Minutes-5.30 percent changeStandard Deviation 2.13
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium1 Hour-4.12 percent changeStandard Deviation 2.08
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium15 Hours-15.38 percent changeStandard Deviation 3.05
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium6 Hours-9.95 percent changeStandard Deviation 1.91
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium18 Hours-14.33 percent changeStandard Deviation 2.31
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium42 Hours-5.92 percent changeStandard Deviation 3.3
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium12 Hours-15.27 percent changeStandard Deviation 1.49
Etelcalcetide 5 mgPercent Change From Baseline in Plasma Ionized Calcium30 Minutes-6.87 percent changeStandard Deviation 2.06
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium30 Hours-11.78 percent changeStandard Deviation 5.66
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium21 Hours-11.77 percent changeStandard Deviation 1.85
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium42 Hours-3.40 percent changeStandard Deviation 3.07
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium6 Hours-2.84 percent changeStandard Deviation 2.67
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium30 Minutes1.18 percent changeStandard Deviation 2.92
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium15 Hours-11.74 percent changeStandard Deviation 4.08
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium24 Hours-11.59 percent changeStandard Deviation 4.49
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium48 Hours-0.39 percent changeStandard Deviation 2.85
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium9 Hours-9.54 percent changeStandard Deviation 5.32
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium18 Hours-12.34 percent changeStandard Deviation 3.27
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium10 Minutes-2.47 percent changeStandard Deviation 2.79
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium27 Hours-7.89 percent changeStandard Deviation 1.46
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium12 Hours-14.92 percent changeStandard Deviation 5.47
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium36 Hours-9.45 percent changeStandard Deviation 3.11
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium3 Hours-1.83 percent changeStandard Deviation 4.07
Etelcalcetide 10 mgPercent Change From Baseline in Plasma Ionized Calcium1 Hour-3.27 percent changeStandard Deviation 1.52
Secondary

Percent Change From Baseline in Serum 1,25 (OH)2 Vitamin D

Time frame: Baseline and 12, 24, and 48 hours post-dose

Population: Modified intent-to-treat population

ArmMeasureGroupValue (MEAN)Dispersion
Pooled PlaceboPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D12 Hours-14.46 percent changeStandard Deviation 5.49
Pooled PlaceboPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D48 Hours-4.32 percent changeStandard Deviation 11.22
Pooled PlaceboPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D24 Hours-0.61 percent changeStandard Deviation 13.13
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D24 Hours3.16 percent changeStandard Deviation 16.23
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D12 Hours-4.64 percent changeStandard Deviation 12.06
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D48 Hours0.09 percent changeStandard Deviation 19.03
Etelcalcetide 2 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D24 Hours4.16 percent changeStandard Deviation 17.23
Etelcalcetide 2 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D12 Hours-6.12 percent changeStandard Deviation 19.16
Etelcalcetide 2 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D48 Hours5.99 percent changeStandard Deviation 18.81
Etelcalcetide 5 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D12 Hours-18.43 percent changeStandard Deviation 9.44
Etelcalcetide 5 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D48 Hours0.61 percent changeStandard Deviation 11.49
Etelcalcetide 5 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D24 Hours-0.54 percent changeStandard Deviation 15.12
Etelcalcetide 10 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D24 Hours-14.51 percent changeStandard Deviation 7.11
Etelcalcetide 10 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D12 Hours-25.60 percent changeStandard Deviation 7.9
Etelcalcetide 10 mgPercent Change From Baseline in Serum 1,25 (OH)2 Vitamin D48 Hours-3.53 percent changeStandard Deviation 16.54
Secondary

Percent Change From Baseline in Serum Calcitonin

Time frame: Baseline and 10 minutes, 30 minutes, 3, 12, 24, and 48 hours post-dose

Population: Modified intent-to-treat population

ArmMeasureGroupValue (MEAN)Dispersion
Pooled PlaceboPercent Change From Baseline in Serum Calcitonin10 Minutes15.92 percent changeStandard Deviation 50.25
Pooled PlaceboPercent Change From Baseline in Serum Calcitonin30 Minutes17.41 percent changeStandard Deviation 57.12
Pooled PlaceboPercent Change From Baseline in Serum Calcitonin3 Hours11.48 percent changeStandard Deviation 25.51
Pooled PlaceboPercent Change From Baseline in Serum Calcitonin12 Hours12.14 percent changeStandard Deviation 52.58
Pooled PlaceboPercent Change From Baseline in Serum Calcitonin24 Hours15.51 percent changeStandard Deviation 61.1
Pooled PlaceboPercent Change From Baseline in Serum Calcitonin48 Hours26.42 percent changeStandard Deviation 74.89
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Calcitonin24 Hours-1.11 percent changeStandard Deviation 2.72
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Calcitonin48 Hours5.00 percent changeStandard Deviation 12.25
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Calcitonin10 Minutes9.18 percent changeStandard Deviation 14.47
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Calcitonin3 Hours3.33 percent changeStandard Deviation 8.16
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Calcitonin12 Hours10.56 percent changeStandard Deviation 25.86
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Calcitonin30 Minutes16.72 percent changeStandard Deviation 29.86
Etelcalcetide 2 mgPercent Change From Baseline in Serum Calcitonin12 Hours-5.07 percent changeStandard Deviation 12.42
Etelcalcetide 2 mgPercent Change From Baseline in Serum Calcitonin24 Hours-5.07 percent changeStandard Deviation 12.42
Etelcalcetide 2 mgPercent Change From Baseline in Serum Calcitonin10 Minutes-5.07 percent changeStandard Deviation 12.42
Etelcalcetide 2 mgPercent Change From Baseline in Serum Calcitonin3 Hours-0.78 percent changeStandard Deviation 17.8
Etelcalcetide 2 mgPercent Change From Baseline in Serum Calcitonin30 Minutes8.20 percent changeStandard Deviation 37.05
Etelcalcetide 2 mgPercent Change From Baseline in Serum Calcitonin48 Hours-5.07 percent changeStandard Deviation 12.42
Etelcalcetide 5 mgPercent Change From Baseline in Serum Calcitonin12 Hours-10.89 percent changeStandard Deviation 17.56
Etelcalcetide 5 mgPercent Change From Baseline in Serum Calcitonin30 Minutes24.39 percent changeStandard Deviation 33.5
Etelcalcetide 5 mgPercent Change From Baseline in Serum Calcitonin3 Hours3.12 percent changeStandard Deviation 20.84
Etelcalcetide 5 mgPercent Change From Baseline in Serum Calcitonin48 Hours0.53 percent changeStandard Deviation 16.81
Etelcalcetide 5 mgPercent Change From Baseline in Serum Calcitonin24 Hours-13.45 percent changeStandard Deviation 20.84
Etelcalcetide 5 mgPercent Change From Baseline in Serum Calcitonin10 Minutes15.44 percent changeStandard Deviation 29.09
Etelcalcetide 10 mgPercent Change From Baseline in Serum Calcitonin24 Hours-4.69 percent changeStandard Deviation 11.48
Etelcalcetide 10 mgPercent Change From Baseline in Serum Calcitonin3 Hours47.81 percent changeStandard Deviation 109.64
Etelcalcetide 10 mgPercent Change From Baseline in Serum Calcitonin30 Minutes77.35 percent changeStandard Deviation 143.22
Etelcalcetide 10 mgPercent Change From Baseline in Serum Calcitonin48 Hours31.58 percent changeStandard Deviation 88.51
Etelcalcetide 10 mgPercent Change From Baseline in Serum Calcitonin12 Hours9.71 percent changeStandard Deviation 28.64
Etelcalcetide 10 mgPercent Change From Baseline in Serum Calcitonin10 Minutes51.45 percent changeStandard Deviation 119.74
Secondary

Percent Change From Baseline in Serum Parathyroid Hormone

Time frame: Baseline and 10 minutes, 30 minutes, 1 hour, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42 and 48 hours post-dose

Population: Modified intent-to-treat population

ArmMeasureGroupValue (MEAN)Dispersion
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone6 Hours-2.57 percent changeStandard Deviation 30.28
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone30 Minutes-3.52 percent changeStandard Deviation 16.29
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone1 Hour1.11 percent changeStandard Deviation 12.85
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone3 Hours1.76 percent changeStandard Deviation 26.67
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone10 Minutes4.57 percent changeStandard Deviation 15.42
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone9 Hours19.87 percent changeStandard Deviation 25.16
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone12 Hours30.49 percent changeStandard Deviation 28.14
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone15 Hours31.97 percent changeStandard Deviation 25.22
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone18 Hours27.21 percent changeStandard Deviation 15.21
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone21 Hours9.65 percent changeStandard Deviation 16.08
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone24 Hours-9.50 percent changeStandard Deviation 16.2
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone27 Hours-21.56 percent changeStandard Deviation 11.39
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone30 Hours10.58 percent changeStandard Deviation 15.51
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone36 Hours25.24 percent changeStandard Deviation 20.51
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone42 Hours6.15 percent changeStandard Deviation 26.47
Pooled PlaceboPercent Change From Baseline in Serum Parathyroid Hormone48 Hours-13.90 percent changeStandard Deviation 15.92
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone36 Hours18.19 percent changeStandard Deviation 25.35
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone21 Hours-0.67 percent changeStandard Deviation 20.04
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone18 Hours-6.22 percent changeStandard Deviation 11.89
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone42 Hours3.28 percent changeStandard Deviation 11.15
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone15 Hours4.17 percent changeStandard Deviation 19.38
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone6 Hours7.01 percent changeStandard Deviation 10.64
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone3 Hours-5.95 percent changeStandard Deviation 7.62
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Minutes-21.74 percent changeStandard Deviation 9.55
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone10 Minutes-20.58 percent changeStandard Deviation 4.25
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Hours-8.19 percent changeStandard Deviation 14.9
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone9 Hours46.50 percent changeStandard Deviation 27.97
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone1 Hour-18.71 percent changeStandard Deviation 11.68
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone48 Hours-10.39 percent changeStandard Deviation 12.66
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone27 Hours-27.97 percent changeStandard Deviation 10.32
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone24 Hours-1.72 percent changeStandard Deviation 22.4
Etelcalcetide 0.5 mgPercent Change From Baseline in Serum Parathyroid Hormone12 Hours8.07 percent changeStandard Deviation 17.54
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone36 Hours20.63 percent changeStandard Deviation 34.27
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone3 Hours-39.87 percent changeStandard Deviation 10.87
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone6 Hours-41.56 percent changeStandard Deviation 12.03
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone9 Hours12.54 percent changeStandard Deviation 40.52
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone12 Hours5.04 percent changeStandard Deviation 27.93
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone15 Hours20.06 percent changeStandard Deviation 39.27
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone42 Hours1.49 percent changeStandard Deviation 23.88
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone18 Hours25.91 percent changeStandard Deviation 28.39
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone21 Hours22.04 percent changeStandard Deviation 16.74
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone24 Hours-14.65 percent changeStandard Deviation 13.43
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone27 Hours-34.76 percent changeStandard Deviation 13.58
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Hours1.21 percent changeStandard Deviation 21.7
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone10 Minutes-45.09 percent changeStandard Deviation 9.31
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone48 Hours-4.86 percent changeStandard Deviation 26.04
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Minutes-55.42 percent changeStandard Deviation 4.31
Etelcalcetide 2 mgPercent Change From Baseline in Serum Parathyroid Hormone1 Hour-47.16 percent changeStandard Deviation 7.94
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone21 Hours-2.10 percent changeStandard Deviation 25.36
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone48 Hours-24.02 percent changeStandard Deviation 15
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone24 Hours-19.25 percent changeStandard Deviation 17.66
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone36 Hours17.61 percent changeStandard Deviation 37.53
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone27 Hours-49.48 percent changeStandard Deviation 12.23
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone9 Hours-40.79 percent changeStandard Deviation 15.91
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Hours-11.15 percent changeStandard Deviation 23.59
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone3 Hours-62.56 percent changeStandard Deviation 13.3
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone10 Minutes-59.38 percent changeStandard Deviation 8.89
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone1 Hour-67.72 percent changeStandard Deviation 10.84
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone15 Hours-2.33 percent changeStandard Deviation 21.12
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone6 Hours-60.87 percent changeStandard Deviation 13.41
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone18 Hours2.19 percent changeStandard Deviation 20.72
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone42 Hours-19.21 percent changeStandard Deviation 20.33
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone12 Hours-24.05 percent changeStandard Deviation 13.94
Etelcalcetide 5 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Minutes-69.00 percent changeStandard Deviation 7.02
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Hours-25.32 percent changeStandard Deviation 12.63
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone21 Hours-4.02 percent changeStandard Deviation 19.11
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone42 Hours-29.37 percent changeStandard Deviation 21.78
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone6 Hours-66.68 percent changeStandard Deviation 10.41
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone30 Minutes-72.56 percent changeStandard Deviation 6.33
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone15 Hours-24.31 percent changeStandard Deviation 17.06
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone24 Hours-18.34 percent changeStandard Deviation 15.17
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone48 Hours-10.84 percent changeStandard Deviation 20.6
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone9 Hours-54.43 percent changeStandard Deviation 12.97
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone18 Hours-15.78 percent changeStandard Deviation 13.66
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone10 Minutes-63.31 percent changeStandard Deviation 8.11
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone27 Hours-37.15 percent changeStandard Deviation 18.99
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone12 Hours-40.28 percent changeStandard Deviation 19.35
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone36 Hours1.08 percent changeStandard Deviation 27.77
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone3 Hours-69.70 percent changeStandard Deviation 7.62
Etelcalcetide 10 mgPercent Change From Baseline in Serum Parathyroid Hormone1 Hour-73.29 percent changeStandard Deviation 6.97
Secondary

Percent Observed Area Under the Concentration-time Curve Extrapolated to Infinity Resulting From Extrapolation to Concentration of 0 ng/mL (AUC%Extrapobs)

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboPercent Observed Area Under the Concentration-time Curve Extrapolated to Infinity Resulting From Extrapolation to Concentration of 0 ng/mL (AUC%Extrapobs)14.0 percentage of AUCINFobsStandard Deviation 1.33
Etelcalcetide 0.5 mgPercent Observed Area Under the Concentration-time Curve Extrapolated to Infinity Resulting From Extrapolation to Concentration of 0 ng/mL (AUC%Extrapobs)13.2 percentage of AUCINFobsStandard Deviation 2.57
Etelcalcetide 2 mgPercent Observed Area Under the Concentration-time Curve Extrapolated to Infinity Resulting From Extrapolation to Concentration of 0 ng/mL (AUC%Extrapobs)12.6 percentage of AUCINFobsStandard Deviation 2.43
Etelcalcetide 5 mgPercent Observed Area Under the Concentration-time Curve Extrapolated to Infinity Resulting From Extrapolation to Concentration of 0 ng/mL (AUC%Extrapobs)12.0 percentage of AUCINFobsStandard Deviation 2.79
Secondary

Terminal Elimination Rate Constant (λz) for Etelcalcetide

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboTerminal Elimination Rate Constant (λz) for Etelcalcetide0.0357 1/hrStandard Deviation 0.00246
Etelcalcetide 0.5 mgTerminal Elimination Rate Constant (λz) for Etelcalcetide0.0349 1/hrStandard Deviation 0.00337
Etelcalcetide 2 mgTerminal Elimination Rate Constant (λz) for Etelcalcetide0.0378 1/hrStandard Deviation 0.00486
Etelcalcetide 5 mgTerminal Elimination Rate Constant (λz) for Etelcalcetide0.0382 1/hrStandard Deviation 0.00539
Secondary

Total Body Clearance (CL) for Etelcalcetide

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboTotal Body Clearance (CL) for Etelcalcetide5.38 L/hrStandard Deviation 0.675
Etelcalcetide 0.5 mgTotal Body Clearance (CL) for Etelcalcetide6.87 L/hrStandard Deviation 0.75
Etelcalcetide 2 mgTotal Body Clearance (CL) for Etelcalcetide8.11 L/hrStandard Deviation 0.928
Etelcalcetide 5 mgTotal Body Clearance (CL) for Etelcalcetide7.83 L/hrStandard Deviation 0.755
Secondary

Volume of Distribution at Steady State for Etelcalcetide

Time frame: Blood samples for PK assessment were drawn pre-dose, at 5, 10, 15, 20, and 30 minutes, post-dose, and at 1, 1.5, 2, 2.5, 3, 4, 6, 12, 24, 36, and 48 hours after drug administration.

Population: Participants who received etelcalcetide

ArmMeasureValue (MEAN)Dispersion
Pooled PlaceboVolume of Distribution at Steady State for Etelcalcetide113 litersStandard Deviation 19.6
Etelcalcetide 0.5 mgVolume of Distribution at Steady State for Etelcalcetide138 litersStandard Deviation 26
Etelcalcetide 2 mgVolume of Distribution at Steady State for Etelcalcetide160 litersStandard Deviation 21
Etelcalcetide 5 mgVolume of Distribution at Steady State for Etelcalcetide152 litersStandard Deviation 30

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026