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A Study of Oral ARD-101 in Patients With Prader-Willi Syndrome

A Phase 2, Single-Arm, Open-Label Study to Evaluate the Safety and Efficacy of ARD-101 in Patients With Prader-Willi Syndrome (PWS)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05153434
Enrollment
19
Registered
2021-12-10
Start date
2022-05-27
Completion date
2024-09-24
Last updated
2026-09-08

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

Conditions

Prader-Willi Syndrome

Brief summary

A Phase 2, Single-Arm, Open-Label Study to Evaluate the Safety and Efficacy of ARD-101 in Patients with Prader-Willi Syndrome

Detailed description

This is a Phase 2, open-label study to investigate the effects of ARD-101 in subjects with Prader-Willi Syndrome. The study will consist of a Screening Period (up to 28 days), a Treatment Period (28 days), and a Follow-up Period (End-of-Study Visit within 14 days after receiving the last dose of ARD-101). The screening procedures will be initiated upon completion of the informed consent process. Following completion of screening procedures and confirmation of eligibility, subjects will be enrolled to receive ARD-101 in an outpatient setting and will be instructed to visit the clinical center periodically for safety and efficacy assessments. ARD-101 will be provided as a fixed dose of 200 mg BID for 28 days (Group 1) and then in a dose escalation of 1 week at 400 mg BID, 1 week at 600 mg BID, then 2 weeks at 800 mg BID (Group 2).

Interventions

Oral administration of ARD-101 taken BID (twice daily) for 28 days.

Sponsors

Aardvark Therapeutics, Inc.
Lead SponsorINDUSTRY
Children's Hospital Colorado
CollaboratorOTHER
Stanford University
CollaboratorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
17 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Male and female subjects, 17-65 years of age * Provide voluntary, written informed consent (parent(s) / legal guardian(s) of participant); provide voluntary, written assent (participants, as appropriate) * PWS due to chromosome 15 micro-deletion, maternal uniparental disomy, or imprinting defect, confirmed by fluorescent in situ hybridization, chromosomal microarray, and/or methylation studies * BMI ≥ 18.5 kg/m² * Qualifying HQ-CT score

Exclusion criteria

* Use of weight loss agents, including herbal medication, within 3 months prior to enrollment * Diagnosis of schizophrenia, bipolar disorder, personality disorder, or other DSM-III disorders which the investigator believes will interfere significantly with study compliance * Clinically significant illness in the 8 weeks prior to enrollment * Current, clinically significant liver, renal, pulmonary, cardiac, oncologic, or gastrointestinal (GI) disease * Diagnosis of type 1 diabetes mellitus or other active endocrine disorders (e.g., Cushing syndrome, or thyroid dysfunction except if on stable adequate thyroid or glucocorticoid replacement supplement) * Significant history of abuse of drugs within 1 year prior to enrollment or a positive Drugs of Abuse (DOA) test at screening * History of alcohol abuse within 1 year prior to enrollment or currently drinks in excess of 21 units per week (3 servings or units/day)

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Treatment Emergent Adverse Events (TEAE)Adverse Events were collected from time of informed consent through end of study; approximately 70 days (28 days of screening, 28 days of treatment, 14 days post treatment follow up).The incidence of treatment emergent adverse events (TEAE) reported through the 28 days of treatment and the 14 days post treatment phase. TEAEs were those events occurring after treatment began.

Secondary

MeasureTime frameDescription
Efficacy Evaluation of Hyperphagia in Prader-Willi SyndromeBaseline, Day 15, Day 28Quantitative evaluation of hyperphagia via the Hyperphagia Questionnaire for Clinical Trials (HQ-CT). The HQCT is a 9-item hyperphasia questionnaire which is validated for use in PWS clinical trials. Score will range from 0 (no hyperphagia behaviors) to 36 (most severe hyperphagia behaviors)
Change in Body WeightBaseline to day 28Total weight change at the end of treatment (day 28) from baseline

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORShawn McCandless, MD

Children's Hospital Colorado

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
2 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
17 Participants
Age, Continuous23.8 years
STANDARD_DEVIATION 7.81
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
6 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
16 Participants
Region of Enrollment
United States
6 participants
Sex: Female, Male
Female
12 Participants
Sex: Female, Male
Male
4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 130 / 6
other
Total, other adverse events
8 / 135 / 6
serious
Total, serious adverse events
0 / 130 / 6

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026