Immunologic Determinants of Response to Pembrolizumab (MK-3475) in Advanced Melanoma (MK-3475-161/KEYNOTE-161)

Merck Sharp & Dohme (MSD)

Status and phase

Terminated

Phase 2

Conditions

Advanced Melanoma

Treatments

Biological: pembrolizumab

Study type

Interventional

Funder types

Industry

Identifiers

NCT03407170

KEYNOTE-161 (Other Identifier)

MK-3475-161 (Other Identifier)

3475-161

Details and patient eligibility

About

In this study, participants with advanced melanoma will be treated with pembrolizumab (MK-3475) and their tumors and blood will be analyzed for changes related to pembrolizumab therapy.

The primary hypotheses are that participants who respond to pembrolizumab have:

a higher fraction of cytotoxic tumor-infiltrating T-lymphocytes (FCT) at baseline compared to those who do not respond to pembrolizumab
a higher fold-increase in FCT compared to baseline than those who do not respond to pembrolizumab
a higher Average Specific Cytotoxic T-lymphocyte Frequency Ratio (ASCTFR) compared to those who do not respond to pembrolizumab

Enrollment

1 patient

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Has a histologically confirmed diagnosis of unresectable stage III or metastatic melanoma not amenable to local therapy
Has testing for a BRAF mutation prior to study entry
Has measurable disease per RECIST 1.1 as assessed by the investigator/radiology
Has resolution of toxic effect(s) of the most recent prior chemotherapy to Grade 1 or less (except alopecia). If the participant received major surgery or radiation therapy of >30 Gray units, they must have recovered from the toxicity and/or complications from the intervention
Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 within 10 days of study start
A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least one of the following conditions applies: is not a woman of childbearing potential (WOCBP) OR is a WOCBP and agrees to use a contraceptive method, consistent with local regulations regarding the methods of contraception for those participating in clinical studies, during the treatment period and for at least 120 days after the last dose of study treatment
A male participant is eligible to participate if he agrees not to donate sperm PLUS to be abstinent from heterosexual intercourse as their preferred and usual lifestyle OR agree to use contraception, consistent with local regulations regarding the methods of contraception for those participating in clinical studies, during the treatment period and for at least 120 days after the last dose of study treatment

Exclusion criteria

Has disease that is suitable for local therapy administered with curative intent
Has a history of interstitial lung disease
Has a positive pregnancy test within 72 hours before the first dose of study therapy
Has received prior therapy with an anti-Programmed Cell Death Protein 1 (PD-1), anti-Programmed Cell Death-Ligand 1 (PD-L1), anti-Programmed Cell Death-Ligand 2 (PD-L2) agent or with an agent directed to another stimulatory or co-inhibitory T-cell receptor (eg, cytotoxic T-lymphocyte-associated protein 4 [CTLA-4], OX-40, CD137)
Has received prior systemic anti-cancer therapy including investigational agents within 4 weeks prior to study start
Has received prior radiotherapy within 2 weeks of start of study therapy
Has received a live vaccine within 30 days prior to the first dose of study therapy
Has received transfusion of blood products (including platelets or red blood cells) or administration of colony stimulating factors (including granulocyte colony stimulating factor [G-CSF], granulocyte macrophage colony stimulating factor [GMCSF] or recombinant erythropoietin) within 4 weeks prior to study start
Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 4 weeks prior to the first dose of study therapy
Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior the first dose of study therapy
Has a known additional malignancy that is progressing or has required active treatment within the past 3 years with the exception of basal cell and squamous cell carcinoma of the skin, transitional cell carcinoma of urothelial cancer, or carcinoma in situ (eg, breast carcinoma, cervical cancer in situ) that have undergone potentially curative therapy
Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis
Has severe hypersensitivity (≥Grade 3) to pembrolizumab and/or any of its excipients
Has an active autoimmune disease that has required systemic treatment in past 2 years
Has a history of (non-infectious) pneumonitis that required steroids or has current pneumonitis
Has an active infection requiring systemic therapy
Has a known history of human immunodeficiency virus (HIV) infection
Has a known history of Hepatitis B (defined as Hepatitis B surface antigen [HBsAg] reactive) or known active Hepatitis C virus (defined as HCV RNA [qualitative] is detected) infection
Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the study, interfere with the participant's participation for the full duration of the study, or is not in the best interest of the participant to participate, in the opinion of the treating investigator
Has known psychiatric or substance abuse disorders that would interfere with cooperating with the requirements of the study
Is pregnant or breastfeeding or expecting to conceive or father children starting with the screening visit through 120 days after the last dose of study therapy