Phase II Trial of Androgen Deprivation Therapy (ADT) and Pembrolizumab for Advanced Stage Androgen Receptor-positive Salivary Gland Carcinoma: Big Ten Cancer Research Consortium BTCRC-HN17-111
A Phase II, multi-center, single-arm, non-blinded study combining androgen deprivation therapy (ADT) and pembrolizumab for patients with metastatic or locally recurrent androgen receptor-positive salivary gland carcinoma, not amenable to surgery or radiation.
• Written informed consent and HIPAA authorization for release of personal health information. NOTE: HIPAA authorization may be included in the informed consent or obtained separately.
• Age ≥ 18 years at the time of consent.
• Locally advanced, recurrent, or metastatic salivary gland carcinoma that is not amenable to curative surgery or radiation
• ECOG Performance Status of 0 or 1 within 28 days prior to registration.
• Local, pathologic testing of androgen receptor-positive salivary gland carcinoma will be performed as standard of care. Archival tissue must be available for central confirmation of androgen receptor-positive disease and for correlative studies. AR positivity will be defined according to IHC staining of tumor tissue with at least 20% of tumor staining positive with moderate intensity (1+ or greater).
• Measurable disease according to RECIST v1.1 for solid tumors within 28 days prior to registration.
• For patients who have been treated with prior therapy, patients must have documented progression of disease on their prior therapy for entry into the study.
• Patients with prior chemotherapy, radiation, or surgery as part of curative intent therapy are allowed. Any number of prior lines of systemic therapy is permitted for entry into this study so long as prior therapy did not include anti-androgen therapy or immune checkpoint blockade.
• If prior cancer treatment, the subject must have recovered from toxic effects of prior cancer treatment (other than alopecia) to ≤ Grade 1.
• Adequate organ function as defined below; all screening labs to be obtained within 28 days prior to registration.
‣ Absolute neutrophil count (ANC) ≥1500/µL
⁃ Platelets ≥100,000/µL
⁃ Hemoglobin ≥9.0 g/dL or ≥5.6 mmol/L
⁃ Creatinine (Cr) OR Measured or calculated creatinine clearance (GFR can also be used in place of Cr or creatinine clearance) ≤1.5 × ULN OR
‣ ≥30 mL/min for participant with creatinine levels \>1.5 × institutional ULN
⁃ Total bilirubin ≤1.5 ×ULN OR direct bilirubin ≤ULN for participants with total bilirubin levels \>1.5 × ULN
⁃ AST (SGOT) and ALT (SGPT) ≤2.5 × ULN (≤5 × ULN for participants with liver metastases) o International normalized ratio (INR) OR prothrombin time (PT) \& aPTT ≤1.5 × ULN unless participant is receiving anticoagulant therapy as long as PT or aPTT is within therapeutic range of intended use of anticoagulants
• A male participant must agree to use contraception during the treatment period and for at least 8 months after the last dose of study treatment and refrain from donating sperm during this period.
• Females of childbearing potential must have a negative serum pregnancy test within 72 hours prior to registration. NOTE: Females are considered of child bearing potential unless they are surgically sterile (have undergone a hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or they are naturally postmenopausal for at least 12 consecutive months
• Females of childbearing potential and males with partners of childbearing potential must be willing to abstain from heterosexual activity or to use a highly effect form of contraception from the time of informed consent until 8 months after treatment discontinuation.
• As determined by the enrolling physician or protocol designee, ability of the subject to understand and comply with study procedures for the entire length of the study