The risk of rash associated with ipilimumab in patients with cancer: A systematic review of the literature and meta-analysis
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Cutaneous adverse effects (AEs) are common following the phosphoinositide-3-kinase (PI3K) inhibitors treatment. We aim to estimate the incidence and risk of PI3K inhibitor-related cutaneous AEs.The protocol was submitted to the PROSPERO registry. We searched ClinicalTrials.gov and international databases up to July 29, 2022. Meta-analysis was conducted by using risk ratios (RRs) with 95% confidence intervals (CIs).Fourteen randomized controlled trials (RCTs) comprising 3877 patients were analyzed in this study. Compared with control arms, PI3K inhibitors showed a significant increase in the risk of all-grade rash, high-grade rash, and serious rash events (RR 2.29, 95% CI 1.58-3.31, p < 0.00001; RR 9.34, 95% CI 4.21-20.69, p < 0.00001; RR 5.11, 95% CI 2.11-12.36, p = 0.0003). The overall incidences of all-grade rash and high-grade rash were 26.2% (592/2257) and 4.4% (66/1487). Subgroup analyses of all-grade rash according to cancer types and PI3K inhibitor assignations identified the significant associations. PI3K inhibitors also significantly increased the risk of pruritus and dry skin (RR 1.63, 95% CI 1.14-2.33, p = 0.007; RR 3.34, 95% CI 2.30-4.85, p < 0.00001), with incidences of 13.4% (284/2115) and 9.8% (141/1436) in the treatment group.There is a significantly increased risk of some cutaneous AEs in patients using PI3K inhibitors. Advance intervention is recommended in case of severe and life-threatening events. Further research is required to investigate the risk factors and pathogenesis.
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Recent studies have indicated higher risk of fractures among coffee drinkers. To quantitatively assess the association between coffee consumption and the risk of fractures, we conducted this meta-analysis.We searched MEDLINE and EMBASE for prospective studies reporting the risk of fractures with coffee consumption. Quality of included studies was assessed with the Newcastle Ottawa scale. We conducted a meta-analysis and a cumulative meta-analysis of relative risk (RR) for an increment of one cup of coffee per day, and explored the potential dose-response relationship. Sensitivity analysis was performed where statistical heterogeneity existed.We included 10 prospective studies covering 214,059 participants and 9,597 cases. There was overall 3.5% higher fracture risk for an increment of one cup of coffee per day (RR = 1.035, 95% CI: 1.019-1.052). Pooled RRs were 1.049 (95% CI: 1.022-1.077) for women and 0.910 (95% CI: 0.873-0.949) for men. Among women, RR was 1.055 (95% CI: 0.999-1.114) for younger participants, and 1.047 (95% CI: 1.016-1.080) for older ones. Cumulative meta-analysis indicated that risk estimates reached a stabilization level (RR = 1.035, 95% CI: 1.019-1.052), and it revealed a positive dose-response relationship between coffee consumption and risk of fractures either for men and women combined or women specifically.This meta-analysis suggests an overall harm of coffee intake in increasing the risk of fractures, especially for women. But current data are insufficient to reach a convincing conclusion and further research needs to be conducted.
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Stage IV metastatic melanoma patients historically have a poor prognosis with 5-10% 5-year survival. Ipilimumab, a monoclonal antibody against cytotoxic T-lymphocyte antigen 4 (CTLA4), is one of the first treatments to provide beneficial durable responses in advanced melanoma. However, less than 25% of those treated benefit, treatment is expensive, and side effects can be fatal. Since soluble (s) CTLA4 may mediate inhibitory effects previously ascribed to the membrane-bound isoform (mCTLA4), we hypothesized patients benefiting from ipilimumab have higher serum levels of sCTLA4. We found that higher sCTLA4 levels correlated both with response and improved survival in patients treated with ipilimumab in a small patient cohort (patients with (n=9) and without (n=5) clinical benefit). sCTLA4 levels were statistically higher in ipilimumab-treated patients with response to ipilimumab. In contrast, sCTLA4 levels did not correlate with survival in patients who did not receive ipilimumab (n=11). These preliminary observations provide a previously unrecognized link between serum sCTLA-4 levels and response to ipilimumab as well as to improved survival in ipilimumab-treated melanoma patients and a potential mechanism by which ipilimumab functions.
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Metastatic melanoma has been historically associated with a poor prognosis; however, the therapeutic landscape has experimented and impressive change in the last years due to rapid advances in the immunotherapy field. The first immunotherapy treatment for metastatic melanoma was ipilimumab (anti-CTLA-4), which showed a significant improvement of overall survival compared to chemotherapy. However, in 2015 anti-PD-1 pembrolizumab shown an improved overall survival, progression-free survival and response rate compared to ipilimumab with either a better toxicity profile. Moreover, other immunotherapy combinations and target therapies, such as BRAF and MEK inhibitors combinations, have shown better outcomes than ipilimumab. Thus, ipilimumab seems to have no role in frontline metastatic melanoma treatment and even their role in second line is being less frequent due to clinical efficacy of those other treatments. Actually, the role of ipilimumab in second line after anti-PD-1 progression is not clear although there is clinical evidence for its use. Here, we report two cases of treatment response with ipilimumab in second line setting after receiving anti-PD-1 combination. So that, ipilimumab may have a role after progression to an anti-PD-1 treatment.
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Targeted therapy and immunotherapy in metastatic melanoma have led to a marked improvement in patients' survival and their quality of life. Although there are data on anti-programmed-death-receptor-1 (anti-PD1) after ipilimumab, only few data are available on ipilimumab following anti-PD1 as the first-line treatment. The aim of our study was to evaluate tolerance and survival of patients treated with ipilimumab as the second-line immunotherapy among metastatic melanoma patients following anti-PD1 treatment. Retrospective and descriptive epidemiological studies were carried out at the Dermatology Department of the University Hospital of Lille. We describe a case series of patients treated with ipilimumab after anti-PD1 failure for metastatic melanomas. For each patient, we assessed disease extension since ipilimumab introduction using RECIST 1.1. The time between ipilimumab introduction and other systemic treatment and overall survival (between ipilimumab introduction and last patient visit) was assessed. The effect of ipilimumab after anti-PD1 treatment was evaluated in eight patients. Four patients responded to ipilimumab: three showed a complete response and one showed a partial response. For these patients, the time period between the first ipilimumab injection and another systemic treatment ranged from 209 to 391 days and the overall survival ranged from 314 to 581 days. One patient showed grade 3 chorioretinitis, an unusual toxicity with ipilimumab or anti-PD1 to our knowledge. We have described the efficacy of ipilimumab following anti-PD1 in metastatic melanoma in eight patients. Several comparative studies are still in progress, and their results will be important to develop an optimal therapeutic strategy for our patients.
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Ipilimumab, a monoclonal CTLA-4 antibody, was the first drug improving overall survival in patients with metastatic melanoma. However, there are still unanswered questions concerning therapeutic regimes, e.g. if maintenance therapy is needed to achieve long-term response. We present three patients with metastatic melanoma who received ipilimumab after progression under chemotherapy. In all of these patients ipilimumab led to a long-term tumor control of at least 32 months. Interestingly, all of them developed severe autoimmune toxicity and ipilimumab treatment was discontinued after 1 respectively 2 cycles. The present cases demonstrate that a long-term response to ipilimumab can be achieved without maintenance therapy.
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