Purpose: Patients with resected, local–regionally advanced, head and neck squamous cell carcinoma (HNSCC) have a one-year disease-free survival (DFS) rate of 65%–69% despite adjuvant (chemo)radiotherapy. Neoadjuvant PD-1 immune-checkpoint blockade (ICB) has demonstrated clinical activity, but biomarkers of response and effect on survival remain unclear. Patients and Methods: Eligible patients had resectable squamous cell carcinoma of the oral cavity, larynx, hypopharynx, or oropharynx (p16-negative) and clinical stage T3-T4 and/or two or more nodal metastases or clinical extracapsular nodal extension (ENE). Patients received neoadjuvant pembrolizumab 200 mg 1–3 weeks prior to surgery, were stratified by absence (intermediate-risk) or presence (high-risk) of positive margins and/or ENE, and received adjuvant radiotherapy (60–66 Gy) and concurrent pembrolizumab (every 3 weeks × 6 doses). Patients with high-risk HNSCC also received weekly, concurrent cisplatin (40 mg/m2). Primary outcome was one-year DFS. Secondary endpoints were one-year overall survival (OS) and pathologic response (PR). Safety was evaluated with CTCAE v5.0. Results: From February 2016 to October 2020, 92 patients enrolled. The median age was 59 years (range, 27–80), 30% were female, 86% had stage T3–T4, and 69% had ≥N2. At a median follow-up of 28 months, one-year DFS was 97% (95% CI, 71%–90%) in the intermediate-risk group and 66% (95% CI, 55%–84%) in the high-risk group. Patients with a PR had significantly improved one-year DFS relative to patients without response (93% vs. 72%, hazard ratio 0.29; 95% CI, 11%–77%). No new safety signals were identified. Conclusions: Neoadjuvant and adjuvant pembrolizumab increased one-year DFS rate in intermediate-risk, but not high-risk, HNSCC relative to historical control. PR to neoadjuvant ICB is a promising surrogate for DFS.

The COVID‐19 pandemic changed health‐care operations around the world and has interrupted standard clinical practices as well as created clinical research challenges for cancer patients. Cancer patients are uniquely susceptible to COVID‐19 infection and have some of the worst outcomes. Importantly, cancer therapeutics could potentially render cancer patients more susceptible to demise from COVID‐19 yet the poor survival outcome of many cancer diagnoses outweighs this risk. In addition, the pandemic has resulted in risks to health‐care workers and research staff driving important change in clinical research operations and procedures. Remote telephone and video visits, remote monitoring, electronic capture of signatures and data, and limiting sample collections have allowed the leadership in our institution to ensure the safety of our staff and patients while continuing critical clinical research operations. Here we discuss some of these unique challenges and our response to change that was necessary to continue cancer clinical research; and, the impacts the pandemic has caused including increases in efficiency for our cancer research office.

Objectives Cisplatin‐based chemoradiation is an established organ‐preserving strategy for locally advanced laryngeal cancer, but long‐term survival remains suboptimal. Immunotherapy has been studied in the metastatic and unresectable recurrent settings. However, additional data are needed to assess its role in organ preservation for locally advanced laryngeal cancer. Methods This trial was an open‐label, single‐arm, multi‐institutional study with a Phase I run‐in portion followed by a planned Phase II component, which closed early due to low accrual. Study patients had Stage III or IV (T2–3; N0–3; M0) laryngeal squamous cell carcinoma and were candidates for larynx preservation. Pembrolizumab was given 2–3 weeks prior to chemoradiation and then, q21 days concurrently with high‐dose cisplatin and radiation prescribed to a total dose of 70 Gy. The primary endpoint of the trial was organ‐preservation rate (OPR) at 18 months. Results A total of nine patients were enrolled with a median follow‐up of 30.1 months. No patient required laryngectomy, resulting in 100% OPR at 18 months. The 12‐month overall survival (OS) rate was 77.8% and the median duration of OS was not reached. All acute Grade 4 (n = 3) toxicities occurred in a single patient with poorly controlled diabetes at baseline. One patient had late Grade 4 laryngeal edema requiring tracheostomy 8 months after chemoradiation, which self‐resolved. Conclusion UCCI‐HN‐15‐02 demonstrated the safety of the addition of immunotherapy to definitive chemoradiation and the patient outcomes suggest the potential for improving long‐term survival while minimizing negative impact from treatment. While results from this trial were promising, a randomized study with a larger number of patients and longer follow‐up is warranted to verify this treatment approach prior to wider adoption. NCT #: NCT02759575. Level of evidence: 2b

Purpose: The efficacy of cetuximab is poor in metastatic head and neck squamous cell carcinoma (HNSCC). Cetuximab initiates natural killer (NK) cell-mediated antibody-dependent cellular cytotoxicity, with resultant recruitment of immune cells and suppression of anti-tumor immunity. We hypothesized that adding an immune checkpoint inhibitor (ICI) could overcome this and lead to an enhanced anti-tumor response. Patients and Methods: A phase II study of cetuximab and durvalumab in metastatic HNSCC was conducted. Eligible patients had measurable disease. Patients who had received both cetuximab and an ICI were excluded. The primary endpoint was objective response rate (ORR) by RECIST 1.1 at six months. Results: As of April 2022, 35 patients enrolled, of whom 33 received at least 1 dose of durvalumab and were included in the response analysis. Eleven patients (33%) had received prior platinum-based chemotherapy, 10 an ICI (30%), and 1 patient (3%) cetuximab. ORR was 39% (13/33) with a median duration of response of 8.6 months (95% CI: 6.5, 16.8). Median progression-free and overall survivals were 5.8 months (95% CI: 3.7 to 14.1) and 9.6 months (95% CI: 4.8 to 16.3), respectively. There were sixteen grade 3 treatment-related adverse events (TRAEs) and one grade 4 TRAE, with no treatment-related deaths. Overall and progression-free survival did not correlate with PD-L1 status. NK cell cytotoxic activity was increased by cetuximab and further increased with the addition of durvalumab in responders. Conclusions: The combination of cetuximab and durvalumab demonstrated durable activity with a tolerable safety profile in metastatic HNSCC and warrants further investigation.