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Absorption, Metabolism, and Excretion of CYC065 in Healthy Male Subjects

A Phase 1, Open-label Study of the Absorption, Metabolism, and Excretion of [14C]-CYC065 Following a Single Oral Dose in Healthy Male Subjects

Status
Completed
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05817890
Enrollment
8
Registered
2023-04-18
Start date
2023-03-03
Completion date
2024-05-22
Last updated
2024-09-19

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

Conditions

Healthy

Brief summary

This will be a Phase 1, open-label, single dose study of the Absorption, Metabolism, and Excretion of CYC065 in healthy male subjects.

Detailed description

Potential subjects will be screened to assess their eligibility to enter the study within 28 days prior to the dose administration. Subjects will be admitted into the study site on Day -1 and be confined to the study site until at least Day 8 (168 hours post dose). On Day 1, subjects will receive a single oral dose of \[14C\]-CYC065. Subjects will be discharged if the following discharge criteria are met: plasma radioactivity levels below the limit of quantitation for 2 consecutive collections, ≥90% mass balance recovery, and ≤1% of the total radioactive dose is recovered in combined excreta (urine and feces) in 2 consecutive 24-hour periods. If discharge criteria are not met by Day 8, subjects will remain in the study site until all discharge criteria are met up to a maximum of Day 15.

Interventions

Open-label Study of the Absorption, Metabolism, and Excretion of \[14C\]-CYC065 Following a Single Oral Dose in Healthy Male Subjects

Sponsors

Cyclacel Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

1. Males, of any race, between 18 and 55 years of age, inclusive. 2. Body mass index (BMI) between 18.0 and 32.0 kg/m2, inclusive, with a total body weight ≥50 kg. 3. In good health, determined by no clinically significant findings from medical history, 12-lead electrocardiogram (ECG), vital signs measurements, and clinical laboratory evaluations at screening and check-in and from the physical examination at check-in, as assessed by the investigator (or designee). 4. Males will agree to use contraception. 5. Able to comprehend and willing to sign an ICF and to abide by the study restrictions. 6. History of a minimum of 1 bowel movement per day.

Exclusion criteria

1. Significant history or clinical manifestation of any metabolic, allergic, dermatological, hepatic, renal, hematological, pulmonary, cardiovascular, gastrointestinal, neurological, respiratory, endocrine, or psychiatric disorder, as determined by the investigator (or designee). 2. History of significant hypersensitivity, intolerance, or allergy to any drug compound, food, or other substance, unless approved by the investigator (or designee). 3. History of stomach or intestinal surgery or resection that would potentially alter absorption and/or excretion of orally administered drugs (uncomplicated appendectomy and hernia repair will be allowed). 4. Confirmed (eg, 2 consecutive measurements) systolic blood pressure \>140 mmHg or \<90 mmHg, diastolic blood pressure \>90 mmHg or \<50 mmHg, and pulse rate \>100 beats per minute or \<40 beats per minute. 5. Positive hepatitis panel and/or positive human immunodeficiency virus test.

Design outcomes

Primary

MeasureTime frameDescription
The routes, rates of elimination, and mass balanceUp to Day 15Total radioactivity from \[14C\]-CYC065 recovery (fet1t2) in urine and feces
AUC for CYC065 in plasmaUp to Day 15To characterize the PK of CYC065 and total radioactivity following administration of \[14C\]CYC065 to healthy subjects
Cmax for CYC065 in plasmaUp to Day 15To characterize the PK of CYC065 and total radioactivity following administration of \[14C\]CYC065 to healthy subjects
Tmax for CYC065 in plasmaUp to Day 15To characterize the PK of CYC065 and total radioactivity following administration of \[14C\]CYC065 to healthy subjects
t½ for CYC065 in plasmaUp to Day 15To characterize the PK of CYC065 and total radioactivity following administration of \[14C\]CYC065 to healthy subjects

Secondary

MeasureTime frameDescription
Concentration of CYC065 metabolitesUp to Day 15To determine, where possible, the quantitative metabolite profiles in plasma, urine, and feces after \[14C\]CYC065
Incidence and severity of AEsUp to Day 15To assess the safety and tolerability of \[14C\]CYC065 when administered to healthy subjects

Countries

United States

Outcome results

None listed

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