| Eligibility |
Inclusion Criteria:
In order to be eligible for participation in this trial, the subject must:
1. Be willing and able to provide written informed consent/assent for the trial.
2. Be >18 years of age on day of signing informed consent.
3. Metastatic HNSCC (at least two distinct lesions: Lesion planned for radiotherapy with
=10 ml tumor volume, or =3 lesions: 1 lesion planned for radiotherapy with =10 ml
tumor volume or 2 lesions planned for radiotherapy with a cumulative tumor volume
=10ml) OR Locally recurrent HNSCC not suitable for curative local treatment within or
outside the previously irradiated tissue (at least two distinct lesions: Lesion
planned for radiotherapy with =10 ml tumor volume, or =3 lesions: 1 lesion planned for
radiotherapy with =10 ml tumor volume or 2 lesions planned for radiotherapy with a
cumulative tumor volume =10ml).
4. Progression to first line platinum-based or any second/third line chemotherapy OR
Progression within 6 months after platinum-based radiochemotherapy of locally advanced
disease
5. Histological confirmation of HNSCC
6. Have at least one measurable lesion according to iRECIST that receives less than 10%
of the prescribed dose of the irradiated lesion(s) (not considering doses from
previous radiotherapy)
7. Have a performance status of 0-1 on the ECOG Performance Scale.
8. Demonstrate adequate organ function
9. Female subject of childbearing potential should have a negative urine or serum
pregnancy within 72 hours prior to receiving the first dose of study medication. If
the urine test is positive or cannot be confirmed as negative, a serum pregnancy test
will be required.
10. Female subjects of childbearing potential (Section 5.7.2) must be willing to use an
adequate method of contraception as outlined in Section 5.7.2 - Contraception, for the
course of the study through 120 days after the last dose of study medication.
Note: Abstinence is acceptable if this is the usual lifestyle and preferred
contraception for the subject.
11. Male subjects of childbearing potential (Section 5.7.1) must agree to use an adequate
method of contraception as outlined in Section 5.7.1- Contraception, starting with the
first dose of study therapy through 120 days after the last dose of study therapy.
Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception
for the subject.
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Exclusion Criteria:
The subject must be excluded from participating in the trial if the subject:
1. Is currently participating and receiving study therapy or has participated in a study
of an investigational agent and received study therapy or used an investigational
device within 4 weeks of the first dose of treatment.
2. Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any
other form of immunosuppressive therapy within 7 days prior to the first dose of trial
treatment.
3. Has a known history of active TB (Bacillus Tuberculosis)
4. Hypersensitivity to pembrolizumab or any of its excipients.
5. Has had a prior anti-cancer monoclonal antibody (mAb) within 4 weeks prior to study
day 1 or who has not recovered (i.e., = grade 1 or at baseline) from adverse events
due to agents administered more than 4 weeks earlier.
6. Has had prior chemotherapy, targeted small molecule therapy, or radiation therapy
within 2 weeks prior to study day 1 or who has not recovered (i.e., = grade 1 or at
baseline) from adverse events due to a previously administered agent.
- Note: Subjects with = grade 2 neuropathy are an exception to this criterion and
may qualify for the study.
- Note: If subject received major surgery, they must have recovered adequately from
the toxicity and/or complications from the intervention prior to starting
therapy.
7. Has a known additional malignancy that is progressing or requires active treatment.
Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the
skin that has undergone potentially curative therapy or in situ cervical cancer.
8. Has known active central nervous system (CNS) metastases and/or carcinomatous
meningitis. Subjects with previously treated brain metastases may participate provided
they are stable (without evidence of progression by imaging for at least four weeks
prior to the first dose of trial treatment and any neurologic symptoms have returned
to baseline), have no evidence of new or enlarging brain metastases, and are not using
steroids for at least 7 days prior to trial treatment. This exception does not include
carcinomatous meningitis which is excluded regardless of clinical stability.
9. Has active autoimmune disease that has required systemic treatment in the past 2 years
(i.e. with use of disease modifying agents, corticosteroids or immunosuppressive
drugs). Replacement therapy (eg., thyroxine, insulin, or physiologic corticosteroid
replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a
form of systemic treatment.
10. History of (non-infectious) pneumonitis that required steroids, evidence of
interstitial lung disease or active, non-infectious pneumonitis
11. Has an active infection requiring systemic therapy.
12. Has a history or current evidence of any condition, therapy, or laboratory abnormality
that might confound the results of the trial, interfere with the subject's
participation for the full duration of the trial, or is not in the best interest of
the subject to participate, in the opinion of the treating investigator.
13. Has known psychiatric or substance abuse disorders that would interfere with
cooperation with the requirements of the trial.
14. Is pregnant or breastfeeding, or expecting to conceive or father children within the
projected duration of the trial, starting with the pre-screening or screening visit
through 120 days after the last dose of trial treatment.
15. Has received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PD-L2 agent.
16. Has a known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies).
17. Has known active hepatitis B (e.g., HBsAg reactive) or hepatitis C (e.g., HCV RNA
[qualitative] is detected).
18. Has received a live vaccine within 30 days of planned start of study therapy. Note:
Seasonal influenza vaccines for injection are generally inactivated flu vaccines and
are allowed; however intranasal influenza vaccines (e.g., Flu-Mist®) are live
attenuated vaccines, and are not allowed.
19. Have a performance status of =2 on the ECOG Performance Scale.
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