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Diabetes is a rare, but potentially life‐threatening, adverse event of immune checkpoint inhibitors that requires prompt recognition and treatment. It usually occurs in the first 3 months of treatment and is typically related to programmed cell death‐1 antibodies, alone or in combined therapy. It has rarely been described developing after immunotherapy cessation. We present a 51‐year‐old man with metastatic melanoma, who developed acute‐onset diabetes 52 days after combined immunotherapy cessation with nivolumab and ipilimumab, and 25.6 months after receiving the first dose. He presented with acute hyperglycemic symptoms, ketosis, complete insulin depletion and negative autoimmunity, fulfilling the criteria of fulminant type 1 diabetes. The patient had previously developed hypophysitis with isolated adrenocorticotropic hormone deficiency during immunotherapy. We describe a case of late‐onset fulminant type 1 diabetes developing after immunotherapy cessation. Patient education and active follow up after immunotherapy discontinuation are crucial to warrant a timely intervention. We describe a case of immunotherapy‐related type 1 diabetes developing after combined immunotherapy cessation. The patient developed fulminant type 1 diabetes >2 years after the first immunotherapy dose, and had previously developed immune‐related hypophysitis.

Previously, findings from CheckMate 238, a double-blind, phase 3 adjuvant trial in patients with resected stage IIIB–C or stage IV melanoma, showed significant improvements in recurrence-free survival and distant metastasis-free survival with nivolumab versus ipilimumab. This report provides updated 4-year efficacy, initial overall survival, and late-emergent safety results. This multicentre, double-blind, randomised, controlled, phase 3 trial was done in 130 academic centres, community hospitals, and cancer centres across 25 countries. Patients aged 15 years or older with resected stage IIIB–C or IV melanoma and an Eastern Cooperative Oncology Group performance status of 0 or 1 were randomly assigned (1:1) to receive nivolumab or ipilimumab via an interactive voice response system and stratified according to disease stage and baseline PD-L1 status of tumour cells. Patients received intravenous nivolumab 3 mg/kg every 2 weeks or intravenous ipilimumab 10 mg/kg every 3 weeks for four doses, and then every 12 weeks until 1 year of treatment, disease recurrence, unacceptable toxicity, or withdrawal of consent. The primary endpoint was recurrence-free survival by investigator assessment, and overall survival was a key secondary endpoint. Efficacy analyses were done in the intention-to-treat population (all randomly assigned patients). All patients who received at least one dose of study treatment were included in the safety analysis. The results presented in this report reflect the 4-year update of the ongoing study with a database lock date of Jan 30, 2020. This study is registered with ClinicalTrials.gov, NCT02388906. Between March 30 and Nov 30, 2015, 906 patients were assigned to nivolumab (n=453) or ipilimumab (n=453). Median follow-up was 51·1 months (IQR 41·6–52·7) with nivolumab and 50·9 months (36·2–52·3) with ipilimumab; 4-year recurrence-free survival was 51·7% (95% CI 46·8–56·3) in the nivolumab group and 41·2% (36·4–45·9) in the ipilimumab group (hazard ratio [HR] 0·71 [95% CI 0·60–0·86]; p=0·0003). With 211 (100 [22%] of 453 patients in the nivolumab group and 111 [25%] of 453 patients in the ipilimumab group) of 302 anticipated deaths observed (about 73% of the originally planned 88% power needed for significance), 4-year overall survival was 77·9% (95% CI 73·7–81·5) with nivolumab and 76·6% (72·2–80·3) with ipilimumab (HR 0·87 [95% CI 0·66–1·14]; p=0·31). Late-emergent grade 3–4 treatment-related adverse events were reported in three (1%) of 452 and seven (2%) of 453 patients. The most common late-emergent treatment-related grade 3 or 4 adverse events reported were diarrhoea, diabetic ketoacidosis, and pneumonitis (one patient each) in the nivolumab group, and colitis (two patients) in the ipilimumab group. Two previously reported treatment-related deaths in the ipilimumab group were attributed to study drug toxicity (marrow aplasia in one patient and colitis in one patient); no further treatment-related deaths were reported. At a minimum of 4 years' follow-up, nivolumab demonstrated sustained recurrence-free survival benefit versus ipilimumab in resected stage IIIB–C or IV melanoma indicating a long-term treatment benefit with nivolumab. With fewer deaths than anticipated, overall survival was similar in both groups. Nivolumab remains an efficacious adjuvant treatment for patients with resected high-risk melanoma, with a safety profile that is more tolerable than that of ipilimumab. Bristol Myers Squibb and Ono Pharmaceutical.

In a randomized trial involving more than 900 patients undergoing resection of advanced melanoma, adjuvant nivolumab was associated with a higher rate of 12-month recurrence-free survival than ipilimumab (70.5% vs. 60.8%) and with fewer adverse events.

Introduction At first interim analysis of KEYNOTE-629, health-related quality of life (HRQoL) with pembrolizumab was stable or improved over 48 weeks in recurrent or metastatic (R/M) cutaneous squamous cell carcinoma (cSCC). HRQoL results from the second interim analysis in R/M or locally advanced (LA) cSCC are presented. Methods Patients received pembrolizumab 200 mg every 3 weeks for ≤ 2 years. Change in EORTC Quality of Life Questionnaire Core 30 (EORTC QLQ-C30) and EQ-5D-5L scores were exploratory end points. Primary analysis was performed at week 12 to ensure adequate completion/compliance. Descriptive analyses were also conducted through weeks 48 and 75 for the LA and R/M cohorts, respectively. Results At data cutoff (29 July 2020), mean scores in the LA cohort ( n  = 47) were stable from baseline to week 12 for EORTC QLQ-C30 global health status (GHS)/quality of life (QoL) (−0.27 points [95% confidence interval (CI) −10.93 to 10.39]), physical functioning (−1.29 points [95% CI  −8.77 to 6.19]), and EQ-5D-5L visual analog scale (2.06 [95% CI −7.70 to 11.82]). HRQoL remained stable through week 48 in the LA cohort; 76.6% and 74.5% of patients had improved or stable GHS/QoL and physical functioning scores, respectively. HRQoL continued to show stability or improvement through week 75 in the R/M cohort ( n  = 99); 71.7% and 64.6% of patients had improved or stable GHS/QoL and physical functioning scores, respectively. Conclusions Pembrolizumab has demonstrated antitumor activity and manageable safety. The current analysis shows pembrolizumab treatment preserved HRQoL. Collectively, these results support pembrolizumab as standard of care for LA or R/M cSCC. Trial Registration ClinicalTrials.gov, NCT03284424—September 15, 2017.

In resected stage III or IV melanoma, nivolumab improved 9-year recurrence-free survival as compared with ipilimumab (44% vs. 37%), with no new late adverse events and fewer subsequent therapies needed.

Immunotherapy combination treatments can improve patient outcomes. Epacadostat, an IDO1 selective inhibitor, and pembrolizumab, a PD-1 inhibitor, showed promising antitumour activity in the phase 1–2 ECHO-202/KEYNOTE-037 study in advanced melanoma. In this trial, we aimed to compare progression-free survival and overall survival in patients with unresectable stage III or IV melanoma receiving epacadostat plus pembrolizumab versus placebo plus pembrolizumab. In this international, randomised, placebo-controlled, double-blind, parallel-group, phase 3 trial, eligible participants were aged 18 years or older, with unresectable stage III or IV melanoma previously untreated with PD-1 or PD-L1 checkpoint inhibitors, an ECOG performance status of 0 or 1, and had a known BRAFV600 mutant status or consented to BRAFV600 mutation testing during screening. Patients were stratified by PD-L1 expression and BRAFV600 mutation status and randomly assigned (1:1) through a central interactive voice and integrated web response system to receive epacadostat 100 mg orally twice daily plus pembrolizumab 200 mg intravenously every 3 weeks or placebo plus pembrolizumab for up to 2 years. We used block randomisation with a block size of four in each stratum. Primary endpoints were progression-free survival and overall survival in the intention-to-treat population. The safety analysis population included randomly assigned patients who received at least one dose of study treatment. The study was stopped after the second interim analysis; follow-up for safety is ongoing. This study is registered with ClinicalTrials.gov, number NCT02752074. Between June 21, 2016, and Aug 7, 2017, 928 patients were screened and 706 patients were randomly assigned to receive epacadostat plus pembrolizumab (n=354) or placebo plus pembrolizumab (n=352). Median follow-up was 12·4 months (IQR 10·3–14·5). No significant differences were found between the treatment groups for progression-free survival (median 4·7 months, 95% CI 2·9–6·8, for epacadostat plus pembrolizumab vs 4·9 months, 2·9–6·8, for placebo plus pembrolizumab; hazard ratio [HR] 1·00, 95% CI 0·83–1·21; one-sided p=0·52) or overall survival (median not reached in either group; epacadostat plus pembrolizumab vs placebo plus pembrolizumab: HR 1·13, 0·86–1·49; one-sided p=0·81). The most common grade 3 or worse treatment-related adverse event was lipase increase, which occurred in 14 (4%) of 353 patients receiving epacadostat plus pembrolizumab and 11 (3%) of 352 patients receiving placebo plus pembrolizumab. Treatment-related serious adverse events were reported in 37 (10%) of 353 patients receiving epacadostat plus pembrolizumab and 32 (9%) of 352 patients receiving placebo plus pembrolizumab. There were no treatment-related deaths in either treatment group. Epacadostat 100 mg twice daily plus pembrolizumab did not improve progression-free survival or overall survival compared with placebo plus pembrolizumab in patients with unresectable or metastatic melanoma. The usefulness of IDO1 inhibition as a strategy to enhance anti-PD-1 therapy activity in cancer remains uncertain. Incyte Corporation, in collaboration with Merck Sharp & Dohme.

Dabrafenib plus trametinib improves clinical outcomes in BRAFV600-mutant metastatic melanoma without brain metastases; however, the activity of dabrafenib plus trametinib has not been studied in active melanoma brain metastases. Here, we report results from the phase 2 COMBI-MB trial. Our aim was to build on the current body of evidence of targeted therapy in melanoma brain metastases through an evaluation of dabrafenib plus trametinib in patients with BRAFV600-mutant melanoma brain metastases. This ongoing, multicentre, multicohort, open-label, phase 2 study evaluated oral dabrafenib (150 mg twice per day) plus oral trametinib (2 mg once per day) in four patient cohorts with melanoma brain metastases enrolled from 32 hospitals and institutions in Europe, North America, and Australia: (A) BRAFV600E-positive, asymptomatic melanoma brain metastases, with no previous local brain therapy, and an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1; (B) BRAFV600E-positive, asymptomatic melanoma brain metastases, with previous local brain therapy, and an ECOG performance status of 0 or 1; (C) BRAFV600D/K/R-positive, asymptomatic melanoma brain metastases, with or without previous local brain therapy, and an ECOG performance status of 0 or 1; and (D) BRAFV600D/E/K/R-positive, symptomatic melanoma brain metastases, with or without previous local brain therapy, and an ECOG performance status of 0, 1, or 2. The primary endpoint was investigator-assessed intracranial response in cohort A in the all-treated-patients population. Secondary endpoints included intracranial response in cohorts B, C, and D. This study is registered with ClinicalTrials.gov, number NCT02039947. Between Feb 28, 2014, and Aug 5, 2016, 125 patients were enrolled in the study: 76 patients in cohort A; 16 patients in cohort B; 16 patients in cohort C; and 17 patients in cohort D. At the data cutoff (Nov 28, 2016) after a median follow-up of 8·5 months (IQR 5·5–14·0), 44 (58%; 95% CI 46–69) of 76 patients in cohort A achieved an intracranial response. Intracranial response by investigator assessment was also achieved in nine (56%; 95% CI 30–80) of 16 patients in cohort B, seven (44%; 20–70) of 16 patients in cohort C, and ten (59%; 33–82) of 17 patients in cohort D. The most common serious adverse events related to study treatment were pyrexia for dabrafenib (eight [6%] of 125 patients) and decreased ejection fraction (five [4%]) for trametinib. The most common grade 3 or worse adverse events, regardless of study drug relationship, were pyrexia (four [3%] of 125) and headache (three [2%]). Dabrafenib plus trametinib was active with a manageable safety profile in this melanoma population that was consistent with previous dabrafenib plus trametinib studies in patients with BRAFV600-mutant melanoma without brain metastases, but the median duration of response was relatively short. These results provide evidence of clinical benefit with dabrafenib plus trametinib and support the need for additional research to further improve outcomes in patients with melanoma brain metastases. Novartis.

The orally available BRAF kinase inhibitor vemurafenib, compared with dacarbazine, shows improved response rates, progression-free survival (PFS), and overall survival in patients with metastatic melanoma that has a BRAFV600 mutation. We assessed vemurafenib in patients with advanced metastatic melanoma with BRAFV600 mutations who had few treatment options. In an open-label, multicentre study, patients with untreated or previously treated melanoma and a BRAFV600 mutation received oral vemurafenib 960 mg twice a day. The primary endpoint was safety. All analyses were done on the safety population, which included all patients who received at least one dose of vemurafenib. This report is the third interim analysis of this study. This study is registered with ClinicalTrials.gov, number NCT01307397. Between March 1, 2011, and Jan 31, 2013, 3226 patients were enrolled in 44 countries. 3222 patients received at least one dose of vemurafenib (safety population). At data cutoff, 868 (27%) patients were on study treatment and 2354 (73%) had withdrawn, mainly because of disease progression. Common adverse events of all grades included rash (1592 [49%]), arthralgia (1259 [39%]), fatigue (1093 [34%]), photosensitivity reaction (994 [31%]), alopecia (826 [26%]), and nausea (628 [19%]). 1480 (46%) patients reported grade 3 or 4 adverse events, including cutaneous squamous cell carcinoma (389 [12%]), rash (155 [5%]), liver function abnormalities (165 [5%]), arthralgia (106 [3%]), and fatigue (93 [3%]). Grade 3 and 4 adverse events were reported more frequently in patients aged 75 years and older (n=257; 152 [59%, 95% CI 53–65] and ten [4%, 2–7], respectively) than in those younger than 75 years (n=2965; 1286 [43%, 42–45] and 82 [3%, 2–3], respectively). Vemurafenib safety in this diverse population of patients with BRAFV600 mutated metastatic melanoma, who are more representative of routine clinical practice, was consistent with the safety profile shown in the pivotal trials of this drug. F Hoffmann-La Roche.

Patients with metastatic melanoma, 50% of whose tumours harbour a BRAF mutation, have a poor prognosis. Selumetinib, a MEK1/2 inhibitor, has shown antitumour activity in patients with BRAF-mutant melanoma and in preclinical models when combined with chemotherapy. This study was designed to look for a signal of improved efficacy by comparing the combination of selumetinib and dacarbazine with dacarbazine alone. This double-blind, randomised, placebo-controlled phase 2 study investigated selumetinib plus dacarbazine versus placebo plus dacarbazine as first-line treatment in patients older than 18 years with histologically or cytologically confirmed advanced BRAF-mutant cutaneous or unknown primary melanoma. Patients were randomly assigned by central interactive voice response system (1:1 ratio, block size four) to take either oral selumetinib (75 mg twice daily in a 21-day cycle) or placebo; all patients received intravenous dacarbazine (1000 mg/m2 on day 1 of a 21-day cycle). Patients, investigators, and the study team were masked to the treatment assigned. The primary endpoint was overall survival analysed by intention to treat. This study is registered at ClinicalTrials.gov, NCT00936221. Between July 20, 2009, and April 8, 2010, 91 patients were randomly assigned to receive dacarbazine in combination with selumetinib (n=45) or placebo (n=46). Overall survival did not differ significantly between groups (median 13·9 months, 80% CI 10·2–15·6, in the selumetinib plus dacarbazine group and 10·5 months, 9·6–14·7, in the placebo plus dacarbazine group; hazard ratio [HR] 0·93, 80% CI 0·67–1·28, one-sided p=0·39). However, progression-free survival was significantly improved in the selumetinib plus dacarbazine group versus the placebo plus dacarbazine group (HR 0·63, 80% CI 0·47–0·84, one-sided p=0·021), with a median of 5·6 months (80% CI 4·9–5·9) versus 3·0 months (2·8–4·6), respectively. The most frequent adverse events included nausea (28 [64%] of 44 patients on selumetinib vs 25 [56%] of 45 on placebo), acneiform dermatitis (23 [52%] vs one [2%]), diarrhoea (21 [48%] vs 13 [29%]), vomiting (21 [48%] vs 15 [33%]), and peripheral oedema (19 [43%] vs three [7%]). The most common grade 3–4 adverse event was neutropenia (six [14%] patients in the selumetinib plus dacarbazine group vs four [9%] in the placebo plus dacarbazine group). Selumetinib plus dacarbazine showed clinical activity in patients with BRAF-mutant cutaneous or unknown primary melanoma, reflected by a significant benefit in progression-free survival compared with placebo plus dacarbazine group, although no significant change in overall survival was noted. The tolerability of this combination was generally consistent with monotherapy safety profiles. AstraZeneca.

BackgroundMucosal melanoma is an aggressive melanoma with poor prognosis. We assessed efficacy of pembrolizumab in patients with advanced mucosal melanoma in KEYNOTE-001 (NCT01295827), −002 (NCT01704287), and −006 (NCT01866319).MethodsPatients received pembrolizumab 2 mg/kg every 3 weeks (Q3W) or 10 mg/kg Q2W or Q3W. Response was assessed by independent central review per RECIST v1.1.Results1567 patients were treated and 84 (5%) had mucosal melanoma. Fifty-one of 84 were ipilimumab-naive. In patients with mucosal melanoma, the objective response rate (ORR) was 19% (95% CI 11–29%), with median duration of response (DOR) of 27.6 months (range 1.1 + to 27.6). Median progression-free survival (PFS) was 2.8 months (95% CI 2.7–2.8), with median overall survival (OS) of 11.3 months (7.7–16.6). ORR was 22% (95% CI 11–35%) and 15% (95% CI 5–32%) in ipilimumab-naive and ipilimumab-treated patients.ConclusionPembrolizumab provides durable antitumour activity in patients with advanced mucosal melanoma regardless of prior ipilimumab.