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Study to Assess PDM608 in Healthy Adult Subjects

A Two-Part Phase 1 Study to Assess the Safety, Tolerability, and Pharmacokinetics of PDM608 in Healthy Adult Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05950906
Enrollment
64
Registered
2023-07-18
Start date
2023-06-27
Completion date
2024-04-19
Last updated
2025-11-18

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

Conditions

Parkinson Disease

Brief summary

The purpose of this study is to assess the safety, tolerability and pharmacokinetics of PDM608 in healthy adult subjects.

Detailed description

This is a 2-part, single-center, first-in-human study of single ascending doses (SAD; Part 1) and multiple ascending doses (MAD; Part 2) of PDM608 in healthy adult subjects. Part 1 is a double-blind, randomized, placebo-controlled assessment of subcutaneous (SC) SAD administrations of PDM608 across 5 cohorts of subjects. All SAD cohorts will follow a sentinel design. Following completion of each cohort, safety and tolerability data through 96 hours post-dose will be reviewed to determine whether to progress to the next dose level and the dose level for the next cohort. Part 2 is a double-blind, randomized, placebo-controlled assessment of SC MAD administrations (once weekly for 4 weeks) of PDM608 across up to 4 cohorts of subjects. Following completion of each cohort the safety and tolerability data 96 hours post last dose will be reviewed to determine whether to progress to the next dose level and the dose level to be administered.

Interventions

DRUGPDM608

PDM608 subcutaneous at single or multiple dose(s) assigned by cohort

DRUGPlacebo

Placebo subcutaneous at single or multiple dose(s) to match PDM608 administration.

Sponsors

Michael J. Fox Foundation for Parkinson's Research
CollaboratorOTHER
Alzheimer's Drug Discovery Foundation
CollaboratorOTHER
Calibr, a division of Scripps Research
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

This is a double-blind study; treatment assignment will not be known to the subjects, the Sponsor and staff involved in the clinical evaluation of the subjects and the analysis of data. The randomization schedule and disclosure envelopes will be generated by an unblinded statistician. The unblinded statistician will not be involved in decisions relating to populations for analysis prior to unblinding. Prior to database lock and unblinding, all original randomization materials including the original final signed and dated randomization schedule will be held by the Quality Assurance department at the study site. The Data Sciences department will not have access to the randomization schedule before database lock/unblinding. There may be instances where interim data has the potential to reveal treatment. In these cases, every effort will be made by the unblinded pharmacokinetic scientist to maintain blinding by appropriate presentation of data to the study team.

Intervention model description

Part 1 Cohorts 1-5 will assess single ascending doses (SAD) of subcutaneous administration PDM608. Part 2 will assess multiple ascending doses (MAD) administrations given once weekly for 4 weeks in up to 4 cohorts of participants. The parts of the study are not required to be conducted entirely sequentially, provided that this is justified by PK and safety data obtained from completed cohorts. The first MAD cohort will not start until data are available from SAD Cohort 3 and dosing for each MAD cohort will not exceed the a dose level previously deemed safe in a SAD cohort.

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy men, or women of non-childbearing potential * Must agree to use an adequate method of contraception * Body mass index (BMI) of 18.0 to 33.0 kg/m2 as measured at screening

Exclusion criteria

* Serious adverse reaction or serious hypersensitivity to any drug or the formulation excipients * Significant allergy requiring treatment * History of clinically significant autoimmune, cardiovascular, renal, hepatic, chronic respiratory or GI disease (except cholecystectomy), neurological or psychiatric disorder, illness/infection/hospitalization or surgical procedure within 30 days prior to first dose of study drug or any uncontrolled medical illness as judged by the investigator * Have poor venous access that limits phlebotomy * Evidence of current SARS-CoV-2 infection or exposure to confirmed infection within 10 days prior to the first dose of study drug * Clinically significant abnormal clinical chemistry, hematology or urinalysis * Hepatitis B, Hepatitis C, HIV, TB * Renal impairment * Pregnant or lactating women or men with pregnant or lactating partners * Received any IMP in a clinical research study within 5 half-lives or within 30 days prior to first dose (whichever is longer) * Taking any prescribed or over-the-counter drug or herbal remedies (other than up to 4 g per day acetaminophen and HRT) in the 14 days or 5 half-lives (whichever is longer) before IMP administration * COVID-19 vaccine within 14 days prior to first dose or have a COVID-19 vaccine scheduled between their first dose of IMP and last dose of IMP. * Drug or alcohol abuse in the past 2 years * Regular alcohol consumption in men \>21 units per week and women \>14 units per week (1 unit = 12 oz 1 bottle/can of beer, 1 oz 40% spirit or 5 oz glass of wine) * Positive alcohol urine test at screening or first admission * Current and within the last six months-smokers, e-cigarettes and nicotine replacement users * Donation of blood within 2 months or donation of plasma within 7 days prior to first dose of study medication * Subjects who are, or are immediate family members of, a study site or Sponsor employee

Design outcomes

Primary

MeasureTime frameDescription
Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Analysis of PDM608 plasma concentration data will be performed using PK parameters.
Number of Participants With Adverse EventsPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Adverse events will be analyzed for severity and potential relationship to PDM608 to determine safety and tolerability of PDM608
Number of Participants With Clinically Significant Abnormal Laboratory Test ResultsPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Results outside of laboratory defined normal ranges will be analyzed for clinical significance and used to determine safety and tolerability of PDM608
Number of Participants With Abnormal Electrocardiogram Readings: QTcFPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal QTcF interval
Number of Participants With Abnormal Electrocardiogram Readings: VRPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal ventricular rate
Number of Participants With Abnormal Electrocardiogram Readings: PR IntervalPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal PR interval
Number of Participants With Abnormal Electrocardiogram Readings: QRS DurationPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal QRS duration
Number of Participants With Abnormal Electrocardiogram Readings: QRS AxisPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal QRS axis
Number of Participants With Abnormal Vital Signs: BPPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal systolic and/or diastolic pressure (mmHg)
Number of Participants With Abnormal Vital Signs: HRPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal heart rate (beats/minute)
Number of Participants With Abnormal Vital Signs: TempPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal body temperature (Celsius)
Number of Participants With Abnormal Vital Signs: RRPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Abnormal respiratory rate (breaths/minute)
Number of Participants With Abnormal Physical ExamsPart 1: Day 1 through Day 5; Part 2: Day 1 through Day 26Physical exams will include evaluation of general appearance, head, neck, thyroid, eyes, ears, nose and throat, respiratory, cardiovascular, abdomen, dermatological, genitourinary, musculoskeletal and neurological systems

Secondary

MeasureTime frameDescription
To Assess Immunogenicity Following Single and Multiple Doses of PDM608Part 1: Day 1 through Day 22; Part 2: Day 1 through Day 60Incidence of ADA in blood

Countries

United States

Participant flow

Pre-assignment details

Participant enrollment was reported as a combined arm (reporting PDM608 and Placebo subjects) to in sections where there is no major benefit to differentiate between treatment vs placebo. Comments were added to Part 2 MAD SC Placebo Cohort 2 to denote that the two subjects who didn't complete the study were assigned to receive active treatment. For the PK and ADA, analysis was only done on subjects who received PDM608.

Participants by arm

ArmCount
Part 1 SAD SC PDM608 Cohort 1
Single SC administration dose of 350 ug PDM608
6
Part 1 SAD SC PDM608/Placebo Cohort 1
Single SC administration dose of 350 ug Placebo
2
Part 1 SAD SC PDM608 Cohort 2
Single SC administration dose of 1050 ug PDM608
6
Part 1 SAD SC Placebo Cohort 2
Single SC administration dose of 1050 ug Placebo
2
Part 1 SAD SC PDM608Cohort 3
Single SC administration dose of 3150 ug PDM608
6
Part 1 SAD SC Placebo Cohort 3
Single SC administration dose of 3150 ug Placebo
2
Part 1 SAD SC PDM608 Cohort 4
Single SC administration dose of 6300 ug PDM608
6
Part 1 SAD SC Placebo Cohort 4
Single SC administration dose of 6300 ug Placebo
2
Part 1 SAD SC PDM608 Cohort 5
Single SC administration dose of 12600 ug PDM608
6
Part 1 SAD SC Placebo Cohort 5
Single SC administration dose of 12600 ug Placebo
2
Part 2 MAD SC PDM608 Cohort 1
Once a week subcutaneous administration of 6300 ug of PDM608 for 4 weeks
9
Part 2 MAD SC Placebo Cohort 1
Once a week subcutaneous administration of 6300 ug of Placebo for 4 weeks
3
Part 2 MAD SC PDM608 Cohort 2
Once a week subcutaneous administration of 12600 ug of PDM608 for 4 weeks
7
Part 2 MAD SC Placebo Cohort 2
Once a week subcutaneous administration of 12600 ug of Placebo for 4 weeks
3
Total62

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009FG010FG011FG012FG013
Overall StudyAdverse Event00000000000010
Overall StudyPhysician Decision00000000000010

Baseline characteristics

CharacteristicTotalPart 1 SAD SC PDM608/Placebo Cohort 1Part 1 SAD SC PDM608 Cohort 2Part 1 SAD SC Placebo Cohort 2Part 1 SAD SC PDM608 Cohort 1Part 1 SAD SC PDM608Cohort 3Part 1 SAD SC Placebo Cohort 3Part 1 SAD SC PDM608 Cohort 4Part 1 SAD SC Placebo Cohort 4Part 1 SAD SC PDM608 Cohort 5Part 1 SAD SC Placebo Cohort 5Part 2 MAD SC PDM608 Cohort 1Part 2 MAD SC Placebo Cohort 1Part 2 MAD SC PDM608 Cohort 2Part 2 MAD SC Placebo Cohort 2
Age, Categorical
<=18 years
0 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 Participants
Age, Categorical
Between 18 and 65 years
62 Participants2 Participants6 Participants2 Participants6 Participants6 Participants2 Participants6 Participants2 Participants6 Participants2 Participants9 Participants3 Participants7 Participants3 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
62 Participants2 Participants6 Participants2 Participants6 Participants6 Participants2 Participants6 Participants2 Participants6 Participants2 Participants9 Participants3 Participants7 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
9 Participants0 Participants0 Participants0 Participants1 Participants1 Participants0 Participants2 Participants1 Participants2 Participants0 Participants1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
More than one race
0 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 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
53 Participants2 Participants6 Participants2 Participants5 Participants5 Participants2 Participants4 Participants1 Participants4 Participants2 Participants8 Participants3 Participants7 Participants2 Participants
Sex: Female, Male
Female
15 Participants0 Participants1 Participants1 Participants2 Participants1 Participants1 Participants2 Participants1 Participants1 Participants0 Participants2 Participants1 Participants1 Participants1 Participants
Sex: Female, Male
Male
47 Participants2 Participants5 Participants1 Participants4 Participants5 Participants1 Participants4 Participants1 Participants5 Participants2 Participants7 Participants2 Participants6 Participants2 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
deaths
Total, all-cause mortality
0 / 60 / 20 / 60 / 20 / 60 / 20 / 60 / 20 / 60 / 20 / 90 / 30 / 90 / 3
other
Total, other adverse events
5 / 60 / 25 / 61 / 24 / 60 / 26 / 60 / 26 / 60 / 29 / 92 / 39 / 92 / 3
serious
Total, serious adverse events
0 / 60 / 20 / 60 / 20 / 60 / 20 / 60 / 20 / 60 / 20 / 90 / 30 / 90 / 3

Outcome results

Primary

Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.

Analysis of PDM608 plasma concentration data will be performed using PK parameters.

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

Population: Cmax for subjects dosed with PDM608~Following a single SC administration of PDM608 at dose levels of 350 μg (cohort 1) and 1050 μg (cohort 2), serum concentrations of PDM608 were BLQ (\<10.0 ng/mL) for all subjects and time points.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Part 1 SAD SC PDM608 Cohort 1Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.NA ng/mL
Part 2 SAD SC Placebo Cohort 1Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.NA ng/mL
Part 1 SAD SC PDM608 Cohort 2Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.23.4 ng/mLGeometric Coefficient of Variation 52.2
Part 1 SAD SC Placebo Cohort 2Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.52.4 ng/mLGeometric Coefficient of Variation 96.4
Part 1 SAD SC PDM608 Cohort 3Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.203 ng/mLGeometric Coefficient of Variation 70.5
Part 1 SAD SC Placebo Cohort 3Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.44.2 ng/mLGeometric Coefficient of Variation 60.2
Part 1 SAD SC PDM608 Cohort 4Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.21.9 ng/mLGeometric Coefficient of Variation 247.9
Part 1 SAD SC Placebo Cohort 4Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.150 ng/mLGeometric Coefficient of Variation 0
Part 1 SAD SC PDM608 Cohort 5Assess PK Parameters for Single (Part 1) and Multiple (Part 2) SC Doses of PDM608 in Healthy Volunteers.10.7 ng/mLGeometric Coefficient of Variation 0
Primary

Number of Participants With Abnormal Electrocardiogram Readings: PR Interval

Abnormal PR interval

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: PR Interval0 Participants
Primary

Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis

Abnormal QRS axis

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Axis0 Participants
Primary

Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration

Abnormal QRS duration

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QRS Duration0 Participants
Primary

Number of Participants With Abnormal Electrocardiogram Readings: QTcF

Abnormal QTcF interval

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: QTcF0 Participants
Primary

Number of Participants With Abnormal Electrocardiogram Readings: VR

Abnormal ventricular rate

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Electrocardiogram Readings: VR0 Participants
Primary

Number of Participants With Abnormal Physical Exams

Physical exams will include evaluation of general appearance, head, neck, thyroid, eyes, ears, nose and throat, respiratory, cardiovascular, abdomen, dermatological, genitourinary, musculoskeletal and neurological systems

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Physical Exams0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Physical Exams0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Physical Exams0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Physical Exams0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Physical Exams0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Physical Exams0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Physical Exams0 Participants
Primary

Number of Participants With Abnormal Vital Signs: BP

Abnormal systolic and/or diastolic pressure (mmHg)

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: BP0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: BP0 Participants
Primary

Number of Participants With Abnormal Vital Signs: HR

Abnormal heart rate (beats/minute)

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: HR0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: HR0 Participants
Primary

Number of Participants With Abnormal Vital Signs: RR

Abnormal respiratory rate (breaths/minute)

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: RR0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: RR0 Participants
Primary

Number of Participants With Abnormal Vital Signs: Temp

Abnormal body temperature (Celsius)

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Abnormal Vital Signs: Temp0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Abnormal Vital Signs: Temp0 Participants
Primary

Number of Participants With Adverse Events

Adverse events will be analyzed for severity and potential relationship to PDM608 to determine safety and tolerability of PDM608

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Adverse Events0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Adverse Events0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Adverse Events0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Adverse Events0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Adverse Events0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Adverse Events0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Adverse Events0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Adverse Events0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Adverse Events0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Adverse Events0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Adverse Events0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Adverse Events0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Adverse Events0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Adverse Events0 Participants
Primary

Number of Participants With Clinically Significant Abnormal Laboratory Test Results

Results outside of laboratory defined normal ranges will be analyzed for clinical significance and used to determine safety and tolerability of PDM608

Time frame: Part 1: Day 1 through Day 5; Part 2: Day 1 through Day 26

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 SAD SC PDM608 Cohort 1Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 2 SAD SC Placebo Cohort 1Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC PDM608 Cohort 2Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC Placebo Cohort 2Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC PDM608 Cohort 3Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC Placebo Cohort 3Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC PDM608 Cohort 4Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC Placebo Cohort 4Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC PDM608 Cohort 5Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 1 SAD SC Placebo Cohort 5Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 2 MAD SC PDM608 Cohort 1Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 2 MAD SC Placebo Cohort 1Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 2 MAD SC PDM608 Cohort 2Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Part 2 MAD SC Placebo Cohort 2Number of Participants With Clinically Significant Abnormal Laboratory Test Results0 Participants
Secondary

To Assess Immunogenicity Following Single and Multiple Doses of PDM608

Incidence of ADA in blood

Time frame: Part 1: Day 1 through Day 22; Part 2: Day 1 through Day 60

Population: The Number of Participants with Positive Anti-Drug Antibodies. Data was not collected for SAD cohorts for 144 and 912 hours pose dose. Data was not collected for MAD cohorts 1-2 for 336 and 504 hours post dose.

ArmMeasureGroupValue (NUMBER)
Part 1 SAD SC PDM608 Cohort 1To Assess Immunogenicity Following Single and Multiple Doses of PDM608336 hours post-dose4 participants
Part 1 SAD SC PDM608 Cohort 1To Assess Immunogenicity Following Single and Multiple Doses of PDM608504 hours post-dose4 participants
Part 2 SAD SC Placebo Cohort 1To Assess Immunogenicity Following Single and Multiple Doses of PDM608504 hours post-dose5 participants
Part 2 SAD SC Placebo Cohort 1To Assess Immunogenicity Following Single and Multiple Doses of PDM608336 hours post-dose6 participants
Part 1 SAD SC PDM608 Cohort 2To Assess Immunogenicity Following Single and Multiple Doses of PDM608504 hours post-dose5 participants
Part 1 SAD SC PDM608 Cohort 2To Assess Immunogenicity Following Single and Multiple Doses of PDM608336 hours post-dose5 participants
Part 1 SAD SC Placebo Cohort 2To Assess Immunogenicity Following Single and Multiple Doses of PDM608336 hours post-dose5 participants
Part 1 SAD SC Placebo Cohort 2To Assess Immunogenicity Following Single and Multiple Doses of PDM608504 hours post-dose6 participants
Part 1 SAD SC PDM608 Cohort 3To Assess Immunogenicity Following Single and Multiple Doses of PDM608336 hours post-dose6 participants
Part 1 SAD SC PDM608 Cohort 3To Assess Immunogenicity Following Single and Multiple Doses of PDM608504 hours post-dose6 participants
Part 1 SAD SC Placebo Cohort 3To Assess Immunogenicity Following Single and Multiple Doses of PDM608Day 28 (144 hours post-dose)9 participants
Part 1 SAD SC Placebo Cohort 3To Assess Immunogenicity Following Single and Multiple Doses of PDM608Day 60 (912 hours post-dose)7 participants
Part 1 SAD SC PDM608 Cohort 4To Assess Immunogenicity Following Single and Multiple Doses of PDM608Day 28 (144 hours post-dose)7 participants
Part 1 SAD SC PDM608 Cohort 4To Assess Immunogenicity Following Single and Multiple Doses of PDM608Day 60 (912 hours post-dose)7 participants

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