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A Phase 1/2 Study of an Investigational Drug, ALN-CC5, in Healthy Adult Volunteers and Patients With PNH

A Phase 1/2 Single-ascending and Multiple-ascending Dose, Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics Study of Subcutaneously Administered ALN-CC5 in Healthy Adult Volunteers and Patients With Paroxysmal Nocturnal Hemoglobinuria

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02352493
Enrollment
62
Registered
2015-02-02
Start date
2015-01-31
Completion date
2017-08-31
Last updated
2020-03-30

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

Conditions

Paroxysmal Nocturnal Hemoglobinuria (PNH)

Keywords

PNH, RNAi therapeutic

Brief summary

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of ALN-CC5 in healthy adult volunteers and subjects with PNH

Interventions

DRUGALN-CC5

Single or multiple doses of ALN-CC5 by subcutaneous (sc) injection

DRUGSterile Normal Saline (0.9% NaCl)

calculated volume to match active comparator

Sponsors

Alnylam Pharmaceuticals
Lead SponsorINDUSTRY

Study design

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

Eligibility

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

Inclusion criteria

* Adequate complete blood counts, liver and renal function * 12-lead electrocardiogram (ECG) within normal limits * Female subjects of child bearing potential agreeing to use a protocol specified method of contraception * Male subjects agreeing to use protocol specified methods of contraception * Willing to provide written informed consent and willing to comply with study requirements

Exclusion criteria

* Any uncontrolled or serious disease, or any medical or surgical condition, that may interfere with participation in the clinical study and/or put the subject at significant risk * Received an investigational agent within 90 days before the first dose of study drug or are in follow-up of another clinical study * History of multiple drug allergies or intolerance to subcutaneous injection * Parts A and B of the study: Used prescription medications within 14 days or 7 half-lives of administration of the first dose of study drug. * History of meningococcal infection

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Adverse EventsPart A: through day 658; Part B: through day 532; Part C: through day 280Adverse events were reported for single-ascending doses (SAD) or multiple ascending doses (MAD) of ALN-CC5 when administered to healthy adult subjects and of multiple doses (MD) in patients with paroxysmal nocturnal hemoglobinuria (PNH)

Secondary

MeasureTime frameDescription
Pharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein LevelsPart A: through day 70; Part B: through day 140; Part C: through day 140Total C5 protein levels were measured in serum samples collected at time points throughout the study using a mass spectrometry-based method. Percentage reduction was calculated relative to baseline levels. A positive value indicates a reduction in C5 protein level from baseline.
Pharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)Part A: through day 70; Part B: through day 140; Part C: through day 140Complement activity was measured in serum samples collected at timepoints throughout the study using the CAP ELISA assay. Percentage reduction was calculated relative to baseline levels. A positive value indicates a reduction in CAP from baseline.
Pharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)Part A: through day 70; Part B: through day 140; Part C: through day 140Complement activity was measured in serum samples collected at time points throughout the study using the CCP ELISA assay. Percentage reduction was calculated relative to baseline levels. A positive value indicates a reduction in CCP from baseline.
Pharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84Maximum observed plasma concentration (Cmax) of ALN-CC5 (cemdisiran) 25-mer.
Pharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84Maximum observed plasma concentration (Cmax) of ALN-CC5 (cemdisiran) 23-mer.
Pharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84Time of maximum observed plasma concentration (T max) of ALN-CC5 (cemdisiran) 23-mer.
Pharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84Area under the plasma concentration-time curve over the dosing interval zero to time (AUC 0-t) of ALN-CC5 (cemdisiran) 25-mer.
Pharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84Area under the plasma concentration-time curve over the dosing interval zero to time (AUC 0-t) of ALN-CC5 (cemdisiran) 23-mer.
Pharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84Time of maximum observed plasma concentration (T max) of ALN-CC5 (cemdisiran) 25-mer.

Countries

Spain, United Kingdom

Participant flow

Pre-assignment details

A total of 62 subjects who met eligibility criteria were enrolled. Part A includes all Groups receiving a Single Ascending Dose of study drug; Part B includes all Groups receiving Multiple Ascending Doses of study drug; Part C includes the ALN-CC5 Multiple Dose - Eculizumab Treated and ALN-CC5 Multiple Dose - Eculizumab Naive Groups.

Participants by arm

ArmCount
Placebo - Single Ascending Dose
Healthy volunteers received a single dose of placebo (normal saline)
8
ALN-CC5 50mg - Single Ascending Dose
Healthy volunteers received a single dose of ALN-CC5 50mg
3
ALN-CC5 50mg (Japanese) - Single Ascending Dose
Japanese healthy volunteers received a single dose of ALN-CC5 50mg
3
ALN-CC5 200mg - Single Ascending Dose
Healthy volunteers received a single dose of ALN-CC5 200mg
3
ALN-CC5 200mg (Japanese) - Single Ascending Dose
Japanese healthy volunteers received a single dose of ALN-CC5 200mg
3
ALN-CC5 400mg - Single Ascending Dose
Healthy volunteers received a single dose of ALN-CC5 400mg
3
ALN-CC5 600mg - Single Ascending Dose
Healthy volunteers received a single dose of ALN-CC5 600mg
3
ALN-CC5 600mg (Japanese) - Single Ascending Dose
Japanese healthy volunteers received a single dose of ALN-CC5 600mg
3
ALN-CC5 900mg - Single Ascending Dose
Healthy volunteers received a single dose of ALN-CC5 900mg
3
Placebo - Multiple Ascending Dose
Healthy volunteers received multiple doses of placebo (normal saline) per corresponding active drug regimen
6
ALN-CC5 100mg Weekly - Multiple Ascending Dose
Healthy volunteers received weekly doses of ALN-CC5 100mg for 5 doses
3
ALN-CC5 200mg Weekly - Multiple Ascending Dose
Healthy volunteers received weekly doses of ALN-CC5 200mg for 5 doses
3
ALN-CC5 400mg Weekly - Multiple Ascending Dose
Healthy volunteers received weekly doses of ALN-CC5 400mg for 5 doses
3
ALN-CC5 600mg Biweekly - Multiple Ascending Dose
Healthy volunteers received biweekly doses of ALN-CC5 600mg for 7 doses
3
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending Dose
Healthy volunteers received weekly doses of ALN-CC5 200mg for 5 doses followed by biweekly doses of 200mg for 4 doses
3
ALN-CC5 200mg Weekly/Monthly - Multiple Ascending Dose
Healthy volunteers received weekly doses of ALN-CC5 200mg for 5 doses followed by monthly doses of 200mg for 2 doses
3
ALN-CC5 Multiple Dose - Eculizumab Treated
Patients received weekly doses of ALN-CC5 200mg or ALN-CC5 400mg for up to 12 weeks concomitantly with eculizumab
3
ALN-CC5 Multiple Dose - Eculizumab Naive
Patients naive to eculizumab received weekly doses of ALN-CC5 400mg for 8 doses or ALN-CC5 200mg for 13 doses followed by weekly doses of ALN-CC5 400mg for 4 doses
3
Total62

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009FG010FG011FG012FG013FG014FG015FG016FG017
Overall StudyLost to Follow-up000000000100120000
Overall StudyPregnancy000000101000000000
Overall StudyWithdrawal by Subject000000001000001000

Baseline characteristics

CharacteristicALN-CC5 50mg - Single Ascending DoseALN-CC5 50mg (Japanese) - Single Ascending DoseALN-CC5 200mg - Single Ascending DoseALN-CC5 200mg (Japanese) - Single Ascending DoseALN-CC5 400mg - Single Ascending DoseALN-CC5 600mg - Single Ascending DoseALN-CC5 600mg (Japanese) - Single Ascending DoseALN-CC5 900mg - Single Ascending DosePlacebo - Multiple Ascending DosePlacebo - Single Ascending DoseALN-CC5 100mg Weekly - Multiple Ascending DoseALN-CC5 200mg Weekly - Multiple Ascending DoseALN-CC5 400mg Weekly - Multiple Ascending DoseALN-CC5 600mg Biweekly - Multiple Ascending DoseALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DoseALN-CC5 200mg Weekly/Monthly - Multiple Ascending DoseALN-CC5 Multiple Dose - Eculizumab TreatedALN-CC5 Multiple Dose - Eculizumab NaiveTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants6 Participants8 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants62 Participants
Age, Continuous24 years
STANDARD_DEVIATION 3.2
33 years
STANDARD_DEVIATION 7
22 years
STANDARD_DEVIATION 1.7
27 years
STANDARD_DEVIATION 5
23 years
STANDARD_DEVIATION 3.8
30 years
STANDARD_DEVIATION 6.7
30 years
STANDARD_DEVIATION 8
27 years
STANDARD_DEVIATION 5.6
27 years
STANDARD_DEVIATION 6.3
26 years
STANDARD_DEVIATION 5
32 years
STANDARD_DEVIATION 7.6
29 years
STANDARD_DEVIATION 3.1
27 years
STANDARD_DEVIATION 2.9
29 years
STANDARD_DEVIATION 4.2
26 years
STANDARD_DEVIATION 3.8
23 years
STANDARD_DEVIATION 6.1
44 years
STANDARD_DEVIATION 16.9
44 years
STANDARD_DEVIATION 11.9
28.6 years
STANDARD_DEVIATION 8.12
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants3 Participants0 Participants3 Participants1 Participants2 Participants3 Participants0 Participants0 Participants3 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants15 Participants
Race (NIH/OMB)
Black or African American
1 Participants0 Participants2 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants4 Participants
Race (NIH/OMB)
White
1 Participants0 Participants1 Participants0 Participants1 Participants1 Participants0 Participants2 Participants5 Participants4 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants3 Participants39 Participants
Sex: Female, Male
Female
0 Participants1 Participants0 Participants1 Participants1 Participants3 Participants0 Participants2 Participants4 Participants2 Participants1 Participants2 Participants1 Participants1 Participants1 Participants1 Participants1 Participants2 Participants24 Participants
Sex: Female, Male
Male
3 Participants2 Participants3 Participants2 Participants2 Participants0 Participants3 Participants1 Participants2 Participants6 Participants2 Participants1 Participants2 Participants2 Participants2 Participants2 Participants2 Participants1 Participants38 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
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
EG013
affected / at risk
EG014
affected / at risk
EG015
affected / at risk
EG016
affected / at risk
EG017
affected / at risk
deaths
Total, all-cause mortality
0 / 80 / 30 / 30 / 30 / 30 / 30 / 30 / 30 / 30 / 60 / 30 / 30 / 30 / 30 / 30 / 30 / 30 / 3
other
Total, other adverse events
6 / 80 / 33 / 32 / 32 / 33 / 33 / 32 / 33 / 36 / 62 / 33 / 33 / 33 / 32 / 33 / 33 / 33 / 3
serious
Total, serious adverse events
0 / 80 / 30 / 30 / 30 / 30 / 30 / 30 / 30 / 30 / 60 / 30 / 30 / 30 / 30 / 30 / 30 / 30 / 3

Outcome results

Primary

Number of Participants With Adverse Events

Adverse events were reported for single-ascending doses (SAD) or multiple ascending doses (MAD) of ALN-CC5 when administered to healthy adult subjects and of multiple doses (MD) in patients with paroxysmal nocturnal hemoglobinuria (PNH)

Time frame: Part A: through day 658; Part B: through day 532; Part C: through day 280

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Placebo - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
Placebo - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)6 Participants
Placebo - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 50mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)0 Participants
ALN-CC5 50mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 50mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 50mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 50mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 50mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 200mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 200mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)2 Participants
ALN-CC5 200mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 200mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 200mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)2 Participants
ALN-CC5 200mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 400mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 400mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 400mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 600mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 600mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 600mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 600mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)2 Participants
ALN-CC5 600mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 600mg (Japanese) - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 900mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 900mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 900mg - Single Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
Placebo - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
Placebo - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)6 Participants
Placebo - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 100mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 100mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 100mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)2 Participants
ALN-CC5 200mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 200mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 200mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 400mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 400mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 400mg Weekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 600mg Biweekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 600mg Biweekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 600mg Biweekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)2 Participants
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 200mg Weekly/Monthly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 200mg Weekly/Monthly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 200mg Weekly/Monthly - Multiple Ascending DoseNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 Multiple Dose - Eculizumab TreatedNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 Multiple Dose - Eculizumab TreatedNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
ALN-CC5 Multiple Dose - Eculizumab TreatedNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 Multiple Dose - Eculizumab NaiveNumber of Participants With Adverse EventsAt least 1 Serious Adverse Event (SAE)0 Participants
ALN-CC5 Multiple Dose - Eculizumab NaiveNumber of Participants With Adverse EventsAt least 1 Treatment Emergent Adverse Event (TEAE)3 Participants
ALN-CC5 Multiple Dose - Eculizumab NaiveNumber of Participants With Adverse EventsAt least 1 TEAE leading to discontinuation0 Participants
Secondary

Pharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels

Total C5 protein levels were measured in serum samples collected at time points throughout the study using a mass spectrometry-based method. Percentage reduction was calculated relative to baseline levels. A positive value indicates a reduction in C5 protein level from baseline.

Time frame: Part A: through day 70; Part B: through day 140; Part C: through day 140

ArmMeasureValue (MEAN)Dispersion
Placebo - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels15.88 percentage reductionStandard Error 2.61
ALN-CC5 50mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels77.61 percentage reductionStandard Error 3.249
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels73.44 percentage reductionStandard Error 2.885
ALN-CC5 200mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels93.17 percentage reductionStandard Error 0.898
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels88.62 percentage reductionStandard Error 0.565
ALN-CC5 400mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels94.60 percentage reductionStandard Error 1.378
ALN-CC5 600mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels97.62 percentage reductionStandard Error 0.902
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels95.47 percentage reductionStandard Error 0.306
ALN-CC5 900mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels97.49 percentage reductionStandard Error 0.252
Placebo - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels24.302 percentage reductionStandard Error 5.9546
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels94.959 percentage reductionStandard Error 0.6087
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels98.297 percentage reductionStandard Error 0.4901
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels98.428 percentage reductionStandard Error 0.2
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels98.695 percentage reductionStandard Error 0.1612
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels98.683 percentage reductionStandard Error 0.3165
ALN-CC5 200mg Weekly/Monthly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels96.870 percentage reductionStandard Error 1.8851
ALN-CC5 Multiple Dose - Eculizumab TreatedPharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels96.057 percentage reductionStandard Error 1.3728
ALN-CC5 Multiple Dose - Eculizumab NaivePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in C5 Protein Levels98.187 percentage reductionStandard Error 0.2586
Secondary

Pharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)

Complement activity was measured in serum samples collected at timepoints throughout the study using the CAP ELISA assay. Percentage reduction was calculated relative to baseline levels. A positive value indicates a reduction in CAP from baseline.

Time frame: Part A: through day 70; Part B: through day 140; Part C: through day 140

ArmMeasureValue (MEAN)Dispersion
Placebo - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)18.823 percentage reductionStandard Error 4.302
ALN-CC5 50mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)49.321 percentage reductionStandard Error 5.6718
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)26.337 percentage reductionStandard Error 5.2159
ALN-CC5 200mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)64.435 percentage reductionStandard Error 2.3138
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)47.628 percentage reductionStandard Error 3.174
ALN-CC5 400mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)58.525 percentage reductionStandard Error 5.5782
ALN-CC5 600mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)72.517 percentage reductionStandard Error 7.5442
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)58.914 percentage reductionStandard Error 13.0568
ALN-CC5 900mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)66.097 percentage reductionStandard Error 7.6113
Placebo - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)25.419 percentage reductionStandard Error 5.9153
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)63.224 percentage reductionStandard Error 4.5313
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)78.028 percentage reductionStandard Error 5.6692
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)70.618 percentage reductionStandard Error 6.7831
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)68.367 percentage reductionStandard Error 0.975
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)77.079 percentage reductionStandard Error 1.4564
ALN-CC5 200mg Weekly/Monthly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)76.470 percentage reductionStandard Error 8.1563
ALN-CC5 Multiple Dose - Eculizumab TreatedPharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)25.951 percentage reductionStandard Error 25.1389
ALN-CC5 Multiple Dose - Eculizumab NaivePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Alternative Pathway (CAP)77.558 percentage reductionStandard Error 5.9434
Secondary

Pharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)

Complement activity was measured in serum samples collected at time points throughout the study using the CCP ELISA assay. Percentage reduction was calculated relative to baseline levels. A positive value indicates a reduction in CCP from baseline.

Time frame: Part A: through day 70; Part B: through day 140; Part C: through day 140

ArmMeasureValue (MEAN)Dispersion
Placebo - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)18.417 percentage reductionStandard Error 2.7684
ALN-CC5 50mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)46.953 percentage reductionStandard Error 2.8152
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)43.615 percentage reductionStandard Error 6.0458
ALN-CC5 200mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)72.939 percentage reductionStandard Error 3.4838
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)63.582 percentage reductionStandard Error 2.5038
ALN-CC5 400mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)72.809 percentage reductionStandard Error 1.5589
ALN-CC5 600mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)87.307 percentage reductionStandard Error 1.375
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)70.830 percentage reductionStandard Error 11.7722
ALN-CC5 900mg - Single Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)80.646 percentage reductionStandard Error 4.2849
Placebo - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)25.419 percentage reductionStandard Error 6.2753
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)72.340 percentage reductionStandard Error 3.4211
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)86.031 percentage reductionStandard Error 4.1209
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)88.821 percentage reductionStandard Error 6.3222
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)80.126 percentage reductionStandard Error 1.6075
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)89.145 percentage reductionStandard Error 1.9147
ALN-CC5 200mg Weekly/Monthly - Multiple Ascending DosePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)75.938 percentage reductionStandard Error 7.2788
ALN-CC5 Multiple Dose - Eculizumab TreatedPharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)21.333 percentage reductionStandard Error 20.2816
ALN-CC5 Multiple Dose - Eculizumab NaivePharmacodynamic (PD) Effect of ALN-CC5: Percentage Reduction From Baseline in Complement Classical Pathway (CCP)87.606 percentage reductionStandard Error 4.9981
Secondary

Pharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)

Area under the plasma concentration-time curve over the dosing interval zero to time (AUC 0-t) of ALN-CC5 (cemdisiran) 23-mer.

Time frame: Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84

Population: All healthy volunteers/patients who received at least one dose of study drug, and who had evaluable plasma or urine PK concentration. For the ALN-CC5 Multiple Dose - Eculizumab Naive group, Day 84 plasma samples were not collected.

ArmMeasureValue (MEAN)Dispersion
Placebo - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)258 h*ng/mLStandard Deviation 58.6
ALN-CC5 50mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)277 h*ng/mLStandard Deviation 40.9
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)2290 h*ng/mLStandard Deviation 362
ALN-CC5 200mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)2470 h*ng/mLStandard Deviation 505
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)5450 h*ng/mLStandard Deviation 1630
ALN-CC5 400mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)10040 h*ng/mLStandard Deviation 3200
ALN-CC5 600mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)9720 h*ng/mLStandard Deviation 2260
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)21540 h*ng/mLStandard Deviation 9930
ALN-CC5 900mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)16.0 h*ng/mLStandard Deviation 7.71
Placebo - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)22.3 h*ng/mLStandard Deviation 9.03
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)88.8 h*ng/mLStandard Deviation 8.95
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)14520 h*ng/mLStandard Deviation 2290
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)2420 h*ng/mLStandard Deviation 668
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)1700 h*ng/mLStandard Deviation 219
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (23-mer)2930 h*ng/mLStandard Deviation 13
Secondary

Pharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)

Area under the plasma concentration-time curve over the dosing interval zero to time (AUC 0-t) of ALN-CC5 (cemdisiran) 25-mer.

Time frame: Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84

Population: All healthy volunteers/patients who received at least one dose of study drug, and who had evaluable plasma or urine PK concentration. For the ALN-CC5 Multiple Dose - Eculizumab Naive group, Day 84 plasma samples were not collected.

ArmMeasureValue (MEAN)Dispersion
Placebo - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)6.63 h*ng/mLStandard Deviation 3.71
ALN-CC5 50mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)7.50 h*ng/mLStandard Deviation 4.65
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)182 h*ng/mLStandard Deviation 101
ALN-CC5 200mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)198 h*ng/mLStandard Deviation 113
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)287 h*ng/mLStandard Deviation 67.2
ALN-CC5 400mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)574 h*ng/mLStandard Deviation 15.6
ALN-CC5 600mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)444 h*ng/mLStandard Deviation 78.2
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)757 h*ng/mLStandard Deviation 154
ALN-CC5 900mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)10.5 h*ng/mLStandard Deviation 1.31
Placebo - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)15.8 h*ng/mLStandard Deviation 3.82
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)40.6 h*ng/mLStandard Deviation 8.44
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)843 h*ng/mLStandard Deviation 472
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)110 h*ng/mLStandard Deviation 11.6
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)93.5 h*ng/mLStandard Deviation 60.7
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: AUC 0-t (25-mer)203 h*ng/mLStandard Deviation 51
Secondary

Pharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)

Maximum observed plasma concentration (Cmax) of ALN-CC5 (cemdisiran) 23-mer.

Time frame: Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84

Population: All healthy volunteers/patients who received at least one dose of study drug, and who had evaluable plasma or urine PK concentration. For the ALN-CC5 Multiple Dose - Eculizumab Naive group, Day 84 plasma samples were not collected.

ArmMeasureValue (MEAN)Dispersion
Placebo - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)27.2 ng/mLStandard Deviation 4.35
ALN-CC5 50mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)30.4 ng/mLStandard Deviation 4.21
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)144 ng/mLStandard Deviation 39.1
ALN-CC5 200mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)178 ng/mLStandard Deviation 38.1
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)384 ng/mLStandard Deviation 183
ALN-CC5 400mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)787 ng/mLStandard Deviation 473
ALN-CC5 600mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)710 ng/mLStandard Deviation 250
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)1500 ng/mLStandard Deviation 966
ALN-CC5 900mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)32.0 ng/mLStandard Deviation 15.4
Placebo - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)44.7 ng/mLStandard Deviation 18.1
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)178 ng/mLStandard Deviation 17.9
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)1080 ng/mLStandard Deviation 243
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)167 ng/mLStandard Deviation 41
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)103 ng/mLStandard Deviation 8.48
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (23-mer)242 ng/mLStandard Deviation 78.5
Secondary

Pharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)

Maximum observed plasma concentration (Cmax) of ALN-CC5 (cemdisiran) 25-mer.

Time frame: Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84

Population: All healthy volunteers/patients who received at least one dose of study drug, and who had evaluable plasma or urine PK concentration. For the ALN-CC5 Multiple Dose - Eculizumab Naive group, Day 84 plasma samples were not collected.

ArmMeasureValue (MEAN)Dispersion
Placebo - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)14.4 ng/mLStandard Deviation 2.33
ALN-CC5 50mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)13.5 ng/mLStandard Deviation 4.38
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)69.8 ng/mLStandard Deviation 22.8
ALN-CC5 200mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)93.9 ng/mLStandard Deviation 30.8
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)111 ng/mLStandard Deviation 6.56
ALN-CC5 400mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)166 ng/mLStandard Deviation 42.7
ALN-CC5 600mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)217 ng/mLStandard Deviation 73.1
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)261 ng/mLStandard Deviation 79.5
ALN-CC5 900mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)21.0 ng/mLStandard Deviation 2.62
Placebo - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)31.5 ng/mLStandard Deviation 7.64
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)81.2 ng/mLStandard Deviation 16.9
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)283 ng/mLStandard Deviation 17
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)61.7 ng/mLStandard Deviation 24.1
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)47.3 ng/mLStandard Deviation 16.4
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: Cmax (25-mer)74.1 ng/mLStandard Deviation 22
Secondary

Pharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)

Time of maximum observed plasma concentration (T max) of ALN-CC5 (cemdisiran) 23-mer.

Time frame: Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84

Population: All healthy volunteers/patients who received at least one dose of study drug, and who had evaluable plasma or urine PK concentration. For the ALN-CC5 Multiple Dose - Eculizumab Naive group, Day 84 plasma samples were not collected.

ArmMeasureValue (MEDIAN)
Placebo - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)8.00 hr
ALN-CC5 50mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)8.00 hr
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)8.00 hr
ALN-CC5 200mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)6.00 hr
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)12.00 hr
ALN-CC5 400mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)4.00 hr
ALN-CC5 600mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)1.00 hr
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)6.00 hr
ALN-CC5 900mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)1.00 hr
Placebo - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)1.00 hr
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)1.00 hr
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)7.00 hr
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)4.00 hr
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)8.00 hr
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (23-mer)7.55 hr
Secondary

Pharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)

Time of maximum observed plasma concentration (T max) of ALN-CC5 (cemdisiran) 25-mer.

Time frame: Part A: 0-48 hrs, Day 0; Part B (weekly dosing cohorts): 0-48 hrs, Day 28; Part B (biweekly, weekly/monthly/biweekly/monthly cohorts): 0-48 hrs, Day 84; Part C: 0- 24 hrs, Day 84

Population: All healthy volunteers/patients who received at least one dose of study drug, and who had evaluable plasma or urine PK concentration. For the ALN-CC5 Multiple Dose - Eculizumab Naive group, Day 84 plasma samples were not collected.

ArmMeasureValue (MEDIAN)
Placebo - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 50mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 50mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 200mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 200mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 400mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 600mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 600mg (Japanese) - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)1.00 hr
ALN-CC5 900mg - Single Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)1.00 hr
Placebo - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)1.0 hr
ALN-CC5 100mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)1.0 hr
ALN-CC5 200mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.75 hr
ALN-CC5 400mg Weekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)0.50 hr
ALN-CC5 600mg Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)1.00 hr
ALN-CC5 200mg Weekly/Biweekly - Multiple Ascending DosePharmacokinetic (PK) Effect of ALN-CC5: T Max (25-mer)1.00 hr

Source: ClinicalTrials.gov · Data processed: Feb 17, 2026