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A Phase I trial of af-001 in patients with differentiated thyroid cancer (papillary and follicular carcinoma)

A Phase I trial of the alpha particle-emitting radiopharmaceutical, af-001, in patients with differentiated thyroid cancer (papillary carcinoma, follicular carcinoma)

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031250472
Enrollment
38
Registered
2025-10-30
Start date
2025-10-30
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

Differentiated thyroid cancer (papillary carcinoma, follicular carcinoma).

Interventions

af-001 will be administered intravenously as a single or multiple dose.

Sponsors

Ishida Nobuo
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Patients with differentiated thyroid cancer (papillary carcinoma, follicular carcinoma) after total thyroidectomy. - Patients with radically unresectable, recurrent, metastatic disease who are judged by the principal investigator or sub-investigator (hereinafter, "principal/sub-investigators") to be refractory to or intolerant of standard-of-care therapy. - Patients with radically unresectable, recurrent, metastatic disease who are RAI naive - Patients with measurable lesions. - Patients with an Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 to 2 and stable general condition. - Patients expected to survive for at least 6 additional months based on clinical symptoms and physical examination findings.

Exclusion criteria

Exclusion criteria: - Patients who need to preserve fertility. - Females who are pregnant or may be pregnant, breastfeeding patients, or patients or their partners who cannot agree to appropriate contraception. - Patients with active multiple cancers (synchronous multiple cancers and ectopic double cancers with a disease-free period of <=3 years). - Patients with uncontrolled active infections. - Patients who are positive for hepatitis B virus surface (HBs) antigen, hepatitis C virus (HCV) antibodies, or human immunodeficiency virus (HIV) antibodies.

Design outcomes

Primary

MeasureTime frame
(1) Safety evaluations (Adverse events, Adverse drug reaction, Abnormal laboratory test result). (2) Dose-limiting toxicities (DLTs). (1) Efficacy evaluations: Tumor shrinkage assessment. (2) Safety evaluations (Adverse events, Adverse drug reaction, Abnormal laboratory test result).

Secondary

MeasureTime frame
(1) Secondary endpoints related to safety. (2) Evaluation of pharmacokinetic parameters. (3) Evaluation of biodistribution imaging and absorbed dose using a gamma camera. (4) Preliminary efficacy evaluations. 1) Tumor shrinkage assessment. 2) Tumor markers (thyroglobulin in blood) over time. (1) Duration of response. (2) Tumor markers (thyroglobulin in blood). (3) Changes in [131I] NaI uptake. (4) Progression-free survival at Month 12.

Contacts

Public ContactHiroaki Kitajima

Alpha Fusion Inc.

development@alpha-fusion.com+81-3-3518-5330

Outcome results

None listed

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