1. Voluntary written consent must be given before performance of any study-related
procedure not part of standard medical care.
2. Histologically confirmed recurrent or metastatic HNSCC (oral cavity, oropharynx,
hypopharynx, larynx) not amenable to therapy with curative intent (surgery or
radiation therapy with or without chemotherapy).
3. Patients not previously treated for recurrent/metastatic disease.
4. Radiographically evaluable disease. Measurable disease as defined by RECIST version
1.1. Previously irradiated lesions can only be considered as measurable disease if
disease progression has been unequivocally documented at that site since radiation and
the previously irradiated lesion is not the only site of disease.
5. Patients unable for cisplatin-based chemotherapy, defined "unable" by:
1. Karnofsky 70% or
2. Karnofsky 80-100% and amenable to chemotherapy, but:
i. Impaired renal function, creatinine clearance >30 mL/min and <80 mL/min GFR could
be assessed by direct measurement (EDTA or creatinine clearance) if available or by
calculation from serum or plasma creatinine (see annex 5), or
ii. grade ≥2 hearing loss, according to the NCI CTCAE v 5.0, or
iii. Class III heart failure according to the New York Heart Association (annex 9), or
iv. History of allergic reactions to cisplatin, carboplatin, or other
platinum-containing compounds or
v. Prior dose of cisplatin ≥225 mg/m² for locally advanced disease (a patient who
received prior RT + 3 cycles of cisplatin 100 mg/m2 or 3 cycles induction TPF (with
cisplatin ≥75/m2) for locally advanced primary HN cancer can be included), or
vi. Disease progression or relapse during or within 6 months of receiving
platinum-based therapy administered as neoadjuvant, adjuvant therapy or as concomitant
chemotherapy with radiotherapy and have received at least 200 mg/m2 of cisplatin.
6. Male or female patients aged ≥18 years. Patients aged >70 years old can only be
included with a G8 (Geriatric 8) health status screening score ≥ 14.
7. Clinical laboratory values as specified below within 28 days before the first dose of
1. Total bilirubin must be ≤2 × the upper limit of normal (ULN).
2. Magnesium ≥ lower limit of normal.
3. Calcium ≥ lower limit of normal.
4. ALT and AST must be ≤3 × ULN unless liver metastases are present, in which case
they must be ≤5x ULN.
a. Hemoglobin must be ≥9 g/dL, absolute neutrophil count (ANC) must be ≥1.500/µL, WBC
must be ≥2.000/µL and platelet count must be ≥100.000/µL.
8. Subjects who have received radiation as primary therapy are eligible if radiation
therapy treatment was completed > 4 weeks prior to inclusion.
9. Subjects who have previously received chemotherapy as part of the initial
multimodality treatment for locally advanced disease are eligible if the chemotherapy
was completed > 24 weeks prior to inclusion.
10. Documentation of PD-L1 status by IHC performed by the central lab at randomization. A
pre-treatment tumor tissue sample should be sent. If several tumor samples are
available, testing should be performed on the most recently obtained tumor sample.
11. Documentation of HPV p16 status (OPC) is required for HNSCC tumor of the oropharynx.
For subjects with oropharyngeal cancer, sites are defined in annex 8. HPV status of
tumor tissue has to be locally determined at screening by any of the following
methods: p16 IHC, in situ hybridization, or polymerase chain reaction based assay. If
HPV status by p16 IHC is positive result confirmation by PCR is mandatory.
1. Male or female patients aged <18 years. Patients aged >70 years old should not be
included with a G8 (Geriatric 8) health status screening score < 14.
2. Karnofsky <70%.
3. Any unresolved toxicity NCI CTCAE Grade ≥2 from previous anticancer therapy except for
alopecia, vitiligo, hear loss and the laboratory values defined in the inclusion
4. Histologically confirmed recurrent or metastatic squamous cell carcinoma of unknown
primary, of the nasopharynx or non-squamous histologies (eg, mucosal melanoma).
5. Active brain metastases or leptomeningeal metastases.
6. Carcinomatous meningitis.
7. Active, known, or suspected autoimmune disease. Subjects with vitiligo, type I
diabetes mellitus, residual hypothyroidism due to autoimmune thyroiditis only
requiring hormone replacement, or unexpected conditions of recurrence in the absence
of an external trigger are allowed to be included.
8. Diagnosis of immunodeficiency or any condition requiring systemic treatment with
either corticosteroids (>10 mg daily prednisone equivalents) or other
immunosuppressive medications within 14 days of treatment.
9. History of pneumonitis requiring treatment with steroids; history of idiopathic
pulmonary fibrosis, drug-induced pneumonitis, organizing pneumonia, or evidence of
active pneumonitis on screening chest CT scan; history of radiation pneumonitis in the
radiation field (fibrosis) is permitted.
10. Patients with a history of interstitial lung disease cannot be included if they have
symptomatic ILD (Grade 3-4) and/or poor lung function.
11. Prior therapy with experimental antitumor vaccines; any T-cell co-stimulation agents
or inhibitors of checkpoint pathways, such as anti-PD-1, anti-PD-L1, anti-PD-L2,
anti-CD137, or anti-CTLA-4 antibody; or other agents specifically targeting T cells
12. Any serious medical or psychiatric illness, including drug or alcohol abuse, that
could, in the investigator's opinion, potentially interfere with the completion of
treatment according to this protocol.
13. Life-threatening illness unrelated to cancer.
14. Female patients who are lactating and breast-feeding or a positive serum pregnancy
test during the screening period.
15. Systemic anticancer treatment or radiotherapy less than 4 weeks or 5 half-lives,
whichever is longer, before the first dose of study treatment or not recovered from
acute toxic effects from prior chemotherapy and radiotherapy.
16. Prior treatment with investigational agents ≤21 days (≤4 weeks for monoclonal
antibodies with evidence of PD) or ≤5 their half-lives (whichever is shorter) before
the first dose of study treatment. A minimum of 10 days should elapse from prior
therapy to initiating protocol therapy.
17. Major surgery within 14 days before the first dose of study drug and not recovered
fully from any complications from surgery.
18. Systemic infection requiring IV antibiotic therapy or other serious infection within
14 days before the first dose of study drug.
19. Known human immunodeficiency virus (HIV) positive (testing not required), or known
acquired immunodeficiency syndrome (AIDS).
20. Patients with positive test for hepatitis B virus or hepatitis C virus indicating
presence of virus, eg, Hepatitis B surface antigen (HBsAg) positive, or Hepatitis C
antibody (anti-HCV) positive (except if HCV-RNA negative).
21. Active secondary malignancy that requires treatment. Patients with previous
malignancies (except non-melanoma skin cancers, and the following in situ cancers:
bladder, gastric, colon, endometrial, cervical/dysplasia, melanoma, or breast) are
excluded unless a complete remission was achieved at least 2 years prior to study
entry and no additional therapy is required during the study period
22. Any clinically significant co-morbidities, such as uncontrolled pulmonary disease,
known impaired cardiac function or clinically significant cardiac disease, active
central nervous system disease, active infection, or any other condition that could
compromise the patient's participation in the study.
23. Patients with history of allergy to study drugs components excipients.
24. Symptomatic peripheral neuropathy of Grade ≥ 2 based on the CTCAE v5.0
25. Pulmonary embolism, deep vein thrombosis, or other significant thromboembolic event ≤
8 weeks prior to starting the study treatment.
26. History of severe skin disorder that in the opinion of the investigator may interfere
with study conduct.
27. History of hypersensitivity reactions to paclitaxel or other drugs formulated in
Cremophor® EL (polyoxyethylated castor oil).