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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
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2071220056
Enrollment
6
Registered
2022-10-07
Start date
2022-09-12
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Healthy adult male volunteer

Interventions

Orally administer 40 mL of the liquid containing [14C]TAS-303 (approximately 1 MB) and 18 mg of TAS-303 on day 1.

Sponsors

Jinhong Huang
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

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 ==40 mmHg and ==40 beats per minute (bpm) and ==35.0 and =<37.4

Exclusion criteria

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
- Concentrations of total radioactivity in blood and plasma, plasma TAS-303 concentrations and the pharmacokinetics parameters of TAS-303 - Radioactivity excretion and excretion rate, cumulative excretion, cumulative excretion rate into urine and feces. - Radioactivity excretion and excretion rate, cumulative excretion, cumulative excretion rate in all excreta (urine and faeces). - Plasma, urinary, and fecal metabolite profiles of TAS-303, and structural estimation.

Contacts

Public ContactTsukamoto Ken

Taiho Pharmaceutical Co., Ltd.

k-tsukamoto@taiho.co.jp+81-3-3293-2455

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026