A First-in-Human Phase 1 Safety and Biodistribution of [177Lu]Lu-ABY-271 in Subjects With HER2-positive Metastatic Breast Cancer

Trial statusRecruiting
Trial phasePhase 1
Trial typeInterventional
Biological sexFemale
Age18+
SponsorAffibody

About this trial

This is a FiH phase 1, open-label, two-stage, randomized trial to assess the safety, tolerability, and biodistribution of \[177Lu\]Lu-ABY-271 in subjects with HER2 positive metastatic breast cancer.

Eligibility criteria

Qualifiers

Subject has unresectable locally advanced or metastatic breast cancer

Subject with histologically or cytologically confirmed carcinoma with documented HER2 overexpression (biopsy not older than 2 years): immunohistochemistry (IHC) score 3+; OR 2+ and fluorescence in situ hybridization (ISH) positive

At least one known tumor lesion ≥ 15 mm

Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2

Disqualifiers

Active brain metastases

Administration of another IMP within 5 half-lives (for experimental biologics: 6 months or 5 half-lives, whichever is longer) of the planned first dose of [177Lu]Lu-ABY-271

Exposure to any anti-tumor therapy since the last documented progression, including any radiotherapy within 7 days prior to the planned first dose of [177Lu]Lu-ABY-271

Trial design

Treatments tested in this trial

  • [177Lu]Lu-ABY-271

Treatment groups

21 Participants
are divided into 4 treatment groups

Sponsors and collaborators