A Study of Pembrolizumab (+) Berahyaluronidase Alfa (MK-3475A) (Pembrolizumab Formulated With Berahyaluronidase Alfa (MK-5180)) in Japanese Participants With Recurrent or Metastatic Cutaneous Squamous Cell Carcinoma (R/M cSCC) or Locally Advanced (LA) Unresectable cSCC (MK-3475A-E39)

Merck Sharp & Dohme (MSD)

Status and phase

Enrolling

Phase 2

Conditions

Squamous Cell Carcinoma

Treatments

Biological: Pembrolizumab (+) Berahyaluronidase alfa

Study type

Interventional

Funder types

Industry

Identifiers

NCT06041802

jRCT2041230074 (Registry Identifier)

3475A-E39

MK-3475A-E39 (Other Identifier)

Details and patient eligibility

About

The purpose of this study is to evaluate the efficacy, safety, and tolerability of subcutaneous (SC) pembrolizumab (+) berahyaluronidase alfa in Japanese participants with recurrent or metastatic cutaneous squamous cell carcinoma or locally advanced unresectable cSCC. The primary hypothesis is that pembrolizumab (+) berahyaluronidase alfa will result in greater than 10% objective response rate (ORR) per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1) as assessed by Blinded Independent Central Review (BICR).

Enrollment

19 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

The key inclusion and exclusion criteria include but are not limited to the following:

Inclusion Criteria:

Has histologically confirmed cSCC by the investigator as the primary site of malignancy
R/M cSCC cohort only: Has metastatic disease, defined as disseminated disease distant to the initial/primary site of diagnosis, and/or has locally recurrent disease that has been previously treated (with either surgery or radiotherapy) and is not curable by either surgery or radiotherapy
LA unresectable cSCC cohort only: Is ineligible for surgical resection
LA unresectable cSCC cohort only: Has received prior radiation therapy (RT) to index site or has been deemed to be not eligible for RT
LA unresectable cSCC cohort only: Has received prior systemic therapy for curative intent are eligible regardless of regimen
Has a life expectancy of greater than 3 months
Must provide archival tumor tissue sample or newly obtained core or excisional biopsy of a tumor lesion not previously irradiated

Exclusion Criteria:

Has cSCC that can be cured with surgical resection, radiotherapy, or with a combination of surgery and radiotherapy.
Has any other histologic type of skin cancer other than invasive squamous cell carcinoma as the primary disease under study
Has received prior systemic anticancer therapy including investigation agents within 4 weeks before allocation
Has not adequately recovered from major surgery or has ongoing surgical complications
Received prior radiotherapy within 2 weeks of study intervention, or had radiation-related toxicities, requiring corticosteroids
Received a live or live-attenuated vaccine within 30 days before the first dose of study intervention
Known additional malignancy that is progressing or has required active treatment within the past 2 years
Has an ongoing active infection requiring systemic therapy
Has a history of human immunodeficiency virus (HIV) infection
Has an active autoimmune disease that has required systemic treatment in past 2 years
Has history of allogenic tissue/organ transplant