Indication for a Pneumocystis Prophylaxis Therapy in Patients with Vascular Anomalies Treated with PIK3/AKT/mTOR Pathway Inhibitors: Experts' Opinion and Systematic Review from the Literature.

BACKGROUND: Vascular anomalies (VAs) are increasingly being treated with PI3K/AKT/mTOR pathway inhibitors. These drugs have immunosuppressive properties and thus theoretically overexpose patients to opportunistic infections, especially Pneumocystis jirovecii pneumonia (PJP). PJP prophylaxis use lacks consensus. We aimed to investigate the prevalence of PJP in patients receiving mTOR/PI3K/AKT inhibitors for VAs and determine any indication for pneumocystis prophylaxis in this population. METHODS: The study was conducted in 2 parts: (1) we sent a survey to a panel of international experts of VAs asking about their use of pneumocystis prophylaxis drugs and (2) we performed a systematic review of the literature of all published cases of patients receiving these drugs for VA to estimate the prevalence of PJP in this population. RESULTS: Answers from 68 experts were analyzed: 21 (30.9%) answered they always add PJP prophylaxis when prescribing mTOR inhibitors, 20 (29.4%) case-by-case, and 27 (39.7%) never. For the systematic review, among 3,053 reports screened, 217 were included involving 1,189 patients (1,143 received sirolimus, 38 everolimus, 4 alpelisib, 4 miransertib). Among the 1,189 cases, 2 (0.2%) PJP were reported: one under sirolimus and one under everolimus. Thus, the prevalence of PJP was estimated at 0.88 cases/1,000 patients under sirolimus (95% CI: -0.84 to 2.59) and 26.31 cases/1,000 under everolimus (95% CI: -24.58 to 77.18). Patients with PJP never received prophylaxis drugs. We found no PJP cases under alpelisib and miransertib. PJP prophylaxis was given in 218 (18.3%) cases, more frequently for children (91.3 vs. 77.2% in the non-prophylaxis group, p = 0.012), mostly trimethoprim-sulfamethoxazole (186 patients, 85.3%). CONCLUSION: Our study shows that even if PJP is a rare event, it may occur in patients with VAs treated with an mTOR inhibitor. Although our results cannot allow for revising guidelines, prophylaxis with TMP-SMX might be appropriate for a subgroup of patients with risk factors for PJP.

Patient and public involvement is suboptimal in randomized controlled trials addressing a chronic condition.

OBJECTIVES: To describe patient and public involvement (PPI) in randomized controlled trials (RCTs) addressing a chronic condition and to analyze whether PPI is associated with trial characteristics. STUDY DESIGN AND SETTING: We used PubMed search to identify RCTs addressing a chronic condition and published in journals with a mandatory PPI statement. RESULTS: Across 101 RCTs; 40 (40%) reported PPI at any stage of the research process. PPI contribution occurred mostly at the design stage of RCTs (n = 36), especially for assessing the burden of the intervention (n = 24), and at the conduct stage (n = 21), with the elaboration of communication materials (n = 14). Less than one-third (13/40) of RCTs included PPI in the development or choice of outcome measures. As compared with non-PPI RCTs, PPI RCTs more frequently were published in The BMJ, had a corresponding author from the United Kingdom, reported a public funding source, had a higher inclusion rate, used usual care as a control and evaluated a digital intervention. PPI RCTs were associated with less frequent use of placebo as a control group. CONCLUSION: Our results underline that PPI is not uncommon in RCTs of chronic conditions but infrequently occurred at a key stage. Yet, the engagement of patients as a real partner in RCTs of chronic conditions should be enhanced.