Skip to content

A Mass Balance Study of [14C] TAS-303 in Healthy Adult Male Subjects

A Mass Balance Study of [14C] TAS-303 in Healthy Adult Male Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05621447
Enrollment
6
Registered
2022-11-18
Start date
2022-09-07
Completion date
2023-02-22
Last updated
2023-08-07

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

Conditions

Healthy Male Subjects

Brief summary

To evaluate the pharmacokinetics, mass balance recovery, metabolite profile and metabolite identification of \[14C\]TAS-303 following oral single dose

Interventions

DRUGTAS-303, [14C]TAS-303

oral administration on day 1

Sponsors

Taiho Pharmaceutical Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 40 Years
Healthy volunteers
Yes

Inclusion criteria

1. Healthy adult male subjects who provided written informed consent to participate in the study 2. Aged 18 years or older and younger than 40 years at the time of informed consent 3. Capable of oral intake. 4. Body weight of 50 kg or more and body mass index of 18.5 or more and less than 25.0 5. Had blood pressure, pulse rate, and body temperature meeting any of the following at screening: Systolic blood pressure: ≧90 mmHg and ≦139 mmHg, Diastolic blood pressure: ≧40 mmHg and ≦89 mmHg, Pulse rate: ≧40 beats per minute (bpm) and ≦99 bpm, Body temperature: ≧35.0°C and ≦37.4°C

Exclusion criteria

1. Had current or previous hypersensitivity or allergy to drugs 2. Had current or previous drug abuse (including use of illicit drugs) or alcoholism 3. Had any concurrent disease (including symptoms and signs; however, diseases that do not affect evaluations in the study such as asymptomatic pollinosis and wart are excluded) 4. Received a radioisotope-labeled substance or subject to a large quantity of radiation exposure\* within 12 months before the first dose of TAS-303. \* A large quantity of radiation exposure includes continuous X-ray irradiation, computed tomography (CT) scan, gastric barium test, and positron emission tomography (PET) scan, excluding tests with low radiation exposure (e.g., chest, bone, or dental X-ray examination, or X-ray examination before boarding an airplane). 5. Occupationally exposed to radiation within a year before the first dose of TAS-303 (such as operators who are involved in nuclear power or radiation operations).

Design outcomes

Primary

MeasureTime frame
Radioactivity excretion and excretion rate,cumulative excretion, cumulative excretion rate in all excreta (urine and feces).Day 1 to Day 22
Concentrations of total radioactivity in blood and plasmaDay1 to 8 and 10,12,14,16,18,20,22
Plasma TAS-303 concentrationsDay1 to 8 and 10,12,14,16,18,20,22
Maximum plasma concentration (Cmax)Day1 to 8 and 10,12,14,16,18,20,22
Area under the plasma concentration versus time curve (AUC).Day1 to 8 and 10,12,14,16,18,20,22
Elimination half life (T1/2)Day1 to 8 and 10,12,14,16,18,20,22
Radioactivity cumulative excretion rate into urineDay 1 to Day 22
Radioactivity cumulative excretion rate into feces.Day 1 to Day 22

Secondary

MeasureTime frameDescription
Adverse eventsDay 1 to Day 29The number and incidence of Adverse events.
Treatment-related adverse eventsDay 1 to Day 29The number and incidence of Treatment-related adverse events.
Number of Participants With Abnormal Laboratory ValuesScreening period and Day -2, 8, 15, 22, 29
Blood PressureScreening period and Day 1, 2, 8, 15, 22, 29
Pulse rateScreening period and Day 1, 8, 15, 22, 29
TemperatureScreening period and Day 1, 2, 8, 15, 22, 29
QTc intervalScreening period and Day 1, 8, 15, 22, 29
Heart rateScreening period and Day 1, 8, 15, 22, 29

Countries

Japan

Outcome results

None listed

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