- Diagnosis of histologically or cytologically confirmed recurrent or metastatic HNSCC
of the oral cavity, oropharynx, larynx, hypopharynx, or p16+ SCC of the neck (unknown
- Measurable disease per RECIST. Measurable disease defined as lesions that can be
accurately measured in at least one dimension (longest diameter to be recorded) as ≥
10 mm with CT scan, as ≥ 20 mm by chest x-ray, or ≥ 10 mm with calipers by clinical
- Incurable disease, or ineligible for (including patient declined) local therapy.
- At least 18 years of age.
- ECOG performance status ≤ 1
- Life expectancy ≥ 16 weeks.
- Normal bone marrow and organ function as defined below:
- Hemoglobin ≥ 10.0 g/dL
- Absolute neutrophil count ≥ 1,500/mcL
- Platelets ≥ 100,000/mcL
- INR or PT ≤ 1.5 x institutional upper limit of normal (IULN) and aPTT ≤ 1.5 x
IULN unless participant is receiving anticoagulant therapy as long as PT or aPTT
is within therapeutic range of intended use of anticoagulants
- Total bilirubin ≤ 1.5 x IULN
- AST(SGOT)/ALT(SGPT) ≤ 2.5 x IULN unless liver metastases are present (in which
case they must be ≤ 5 x IULN)
- Serum creatinine <1.5 x ULN or creatinine clearance ≥ 51 mL/min by
Cockcroft-Gault or based on a 24-hour urine test
- Known p16 expression, if oropharyngeal primary.
- Postmenopausal or evidence of non-childbearing status for women of childbearing
potential: negative urine or serum pregnancy test within 28 days of study treatment
and confirmed prior to treatment on Day 1.
*Postmenopausal is defined as:
- Amenorrheic for 1 year or more following cessation of exogenous hormonal
- Luteinizing hormone (LH) and Follicle stimulating hormone (FSH) levels in the
post menopausal range for women under 50
- radiation-induced oophorectomy with last menses >1 year ago
- chemotherapy-induced menopause with >1 year interval since last menses
- surgical sterilization (bilateral oophorectomy or hysterectomy)
- Male patients must use a condom during treatment and for 3 months after the last dose
of olaparib when having sexual intercourse with a pregnant woman or with a woman of
childbearing potential. Female partners of male patients should also use a highly
effective form of contraception (see Section 5.6) if they are of childbearing
- Ability to understand and willingness to sign an IRB approved written informed consent
document (or that of legally authorized representative, if applicable).
- Progression within 6 months of curatively intended systemic therapy given for
locoregionally advanced disease.
- Investigational therapy within 28 days of treatment start.
- Prior systemic therapy for recurrent or metastatic disease.
- No known CNS metastases/leptomeningeal metastatic disease.
- Other malignancy unless curatively treated with no evidence of disease for ≥ 2 years
except: adequately treated non-melanoma skin cancer, curative treated in situ cancer
of the cervix, ductal carcinoma in situ (DCIS), stage 1 grade 1 endometrial carcinoma;
or low risk-disease per discretion of the PI.
- A history of allergic reactions attributed to compounds of similar chemical or
biologic composition to olaparib, pembrolizumab, carboplatin, or other agents used in
- Concomitant use of known strong CYP3A inhibitors (e.g., itraconazole, telithromycin,
clarithromycin, protease inhibitors boosted with ritonavir or cobicistat, indinavir,
saquinavir, nelfinavir, boceprevir, telaprevir) or moderate CYP3A inhibitors (e.g.,
ciprofloxacin, erythromycin, diltiazem, fluconazole, verapamil). The required washout
period prior to starting olaparib is 2 weeks.
- Concomitant use of known strong CYP3A inducers (e.g. phenobarbital, enzalutamide,
phenytoin, rifampicin, rifabutin, rifapentine, carbamazepine, nevirapine, and St.
John's wort) or moderate CYP3A inducers (e.g., bosentan, efavirenz, modafinil). The
required washout period prior to starting olaparib is 5 weeks for enzalutamide or
phenobarbital and 3 weeks for other agents.
- Resting ECG indicating uncontrolled, potentially reversible cardiac conditions as
judged by the investigator (e.g., unstable ischemia, uncontrolled symptomatic
arrhythmia, congestive heart failure, QTcF prolongation > 500 ms, electrolyte
disturbances, etc.) or patients with congenital long QT syndrome.
- Diagnosis of myelodysplastic syndrome/acute myeloid leukemia or with features
suggestive of MDS/AML.
- Major surgery within 2 weeks of starting study treatment; must have recovered from any
effects of major surgery.
- Has a diagnosis of immunodeficiency or is receiving chronic systemic corticosteroid
therapy (in doses exceeding 10 mg daily of prednisone equivalent) or any other form of
immunosuppressive therapy within 7 days prior to the first dose of treatment.
- Received a live vaccine within 30 days prior to the first dose of pembrolizumab.
Examples of live vaccines include, but are not limited to, the following: measles,
mumps, rubella, varicella/zoster (chicken pox), yellow fever, rabies, Bacillus
Calmette-Guerin (BCG), and typhoid vaccine. Seasonal influenza vaccines for injection
are generally killed virus vaccines and are allowed; however, intranasal influenza
vaccines (e.g. FluMist®) are live attenuated vaccines and are not allowed.
- Considered a poor medical risk due to a serious, uncontrolled medical disorder,
non-malignant systemic disease, or active, uncontrolled infection. Examples include,
but are not limited to, uncontrolled ventricular arrhythmia, recent (within 3 months)
myocardial infarction, uncontrolled major seizure disorder, unstable spinal cord
compression, superior vena cava syndrome, extensive interstitial bilateral lung
disease on high resolution computed tomography (HRCT) scan or any psychiatric disorder
that prohibits obtaining informed consent.
- Unable to swallow orally administered medication or with gastrointestinal disorder
likely to interfere with absorption of study medication.
- Pregnant and/or breastfeeding. Women of childbearing potential must have a negative
serum pregnancy test within 72 hours of first dose of treatment.
- Prior organ or allogeneic stem cell transplant or double umbilical cord blood
- Has an active autoimmune disease (i.e. rheumatoid arthritis, lupus, Sjogren's
syndrome) that has required IV or subcutaneous systemic treatment in the past 6 months
(excluding Rituxan). Replacement therapy (i.e. thyroxine, insulin, or physiologic
corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is
not considered a form of systemic treatment. Patients who are known to be
serologically positive for HIV or have known active hepatitis B or C are ineligible.
- History of (non-infectious) pneumonitis that required steroids or has current
- Has a known history of active TB (Bacillus Tuberculosis).