Prognostic and Predictive Role of Body Composition in Metastatic Neuroendocrine Tumor Patients Treated with Everolimus: A Real-World Data Analysis.

Neuroendocrine tumors (NETs) are rare neoplasms frequently characterized by an upregulation of the mammalian rapamycin targeting (mTOR) pathway resulting in uncontrolled cell proliferation. The mTOR pathway is also involved in skeletal muscle protein synthesis and in adipose tissue metabolism. Everolimus inhibits the mTOR pathway, resulting in blockade of cell growth and tumor progression. The aim of this study is to investigate the role of body composition indexes in patients with metastatic NETs treated with everolimus. The study population included 30 patients with well-differentiated (G1-G2), metastatic NETs treated with everolimus at the IRCCS Romagnolo Institute for the Study of Tumors (IRST) "Dino Amadori", Meldola (FC), Italy. The body composition indexes (skeletal muscle index [SMI] and adipose tissue indexes) were assessed by measuring on a computed tomography (CT) scan the cross-sectional area at L3 at baseline and at the first radiological assessment after the start of treatment. The body mass index (BMI) was assessed at baseline. The median progression-free survival (PFS) was 8.9 months (95% confidence interval [CI]: 3.4-13.7 months). The PFS stratified by tertiles was 3.2 months (95% CI: 0.9-10.1 months) in patients with low SMI (tertile 1), 14.2 months (95% CI: 2.3 months-not estimable [NE]) in patients with intermediate SMI (tertile 2), and 9.1 months (95% CI: 2.7 months-NE) in patients with high SMI (tertile 3) (p = 0.039). Similarly, the other body composition indexes also showed a statistically significant difference in the three groups on the basis of tertiles. The median PFS was 3.2 months (95% CI: 0.9-6.7 months) in underweight patients (BMI ≤ 18.49 kg/m2) and 10.1 months (95% CI: 3.7-28.4 months) in normal-weight patients (p = 0.011). There were no significant differences in terms of overall survival. The study showed a correlation between PFS and the body composition indexes in patients with NETs treated with everolimus, underlining the role of adipose and muscle tissue in these patients.

Radiotherapy and High-Dose Interleukin-2: Clinical and Immunological Results of a Proof of Principle Study in Metastatic Melanoma and Renal Cell Carcinoma.

High-dose interleukin-2 (HD IL-2) has curative potential in metastatic melanoma (MM) and renal cell carcinoma (RCC). Radiotherapy (RT) kills cancer cells and induces immunomodulatory effects. Prospective trials exploring clinical and immunological properties of combined RT/HD IL-2 are still needed. We designed a phase II, single-arm clinical trial for patients with MM and RCC. The treatment schedule consisted of 3 daily doses of 6-12 Gy of RT to 1-5 non-index metastatic fields, before IL-2 at the first and third treatment cycle. HD IL-2 was administered by continuous infusion for 72 hours and repeated every 3 weeks for up to 4 cycles, thereafter every 4 weeks for a maximum of 2 cycles. The primary endpoint was the immunological efficacy of the combined RT/HD IL-2 treatment (assessed by IFN-γ ELISPOT). Nineteen out of 22 patients were evaluable for immunological and clinical response. Partial response occurred in 3 (15.7%) patients and stable disease was observed in 7 (36.8%). The disease control rate was 52.6% after a median follow up of 39.2 months. According to Common Terminology Criteria for Adverse Events 4.0 (CTCAE 4.0), the majority of toxicities were grade 1-2. Immunological responses were frequent and detected in 16 (84.2%) patients. Increased levels of IL-8 and IL-10 in melanoma, circulating effector memory CD4+ and intratumoral CD8+ T cells in both tumor types were detected after therapy. Overall the treatment was well tolerated and immunologically active. Immunomonitoring and correlative data on tumor and peripheral blood cell subsets suggest that this combination treatment could be a promising strategy for patients progressing after standard treatments.

Prospective Observational Study Comparing Calcium and Sodium Levofolinate in Combination with 5-Fluorouracil in the FOLFIRI Regimen.

LESSONS LEARNED: The use of sodium levofolinate (Na-Lev) is safe in combination with continuous infusion 5-fluorouracil in patients with gastrointestinal tumors treated with the FOLFIRI regimen. A comparison with calcium levofolinate (Ca-Lev) showed a similar toxicity profile. The advantages of Na-Lev over Ca-Lev might be the faster drug preparation and the shorter time of drug administration. BACKGROUND: The objectives of this study were to compare the safety profiles of sodium levofolinate (Na-Lev) and calcium levofolinate (Ca-Lev) in combination with 5-fluorouracil (5-FU) in the FOLFIRI regimen and to measure the organizational impact of the introduction of Na-Lev on drug production and administration. METHODS: The study opened in November 2015 and closed in August 2019. Patients with gastrointestinal cancers who were candidates for treatment with the FOLFIRI regimen were included in this nonrandomized study. Age ≥18 years, life expectancy >3 months, adequate bone marrow reserve, adequate hepatic and renal function, and an ECOG performance status of 0-2 were required. Patients in the Ca-Lev arm received a 2-hour infusion of Ca-Lev followed by 5-FU, whereas those in the Na-Lev arm received Na-Lev and 5-FU administered in a single 48-hour pump. RESULTS: Sixty patients were enrolled, 30 in each arm. Patient characteristics were balanced. Grade (G)1-2 adverse events occurred in 18 (60.0%) and 19 (63.4%) patients of Na-Lev and Ca-Lev cohorts, respectively, whereas G3-4 adverse events occurred in 12 (40.0%) and 11 (36.6%) patients, respectively. The use of Na-Lev enabled us to save approximately 13 minutes for drug preparation and 2 hours for treatment administration, per patient per cycle. CONCLUSION: Na-Lev showed a reassuring toxicity profile and a favorable impact on drug preparation and administration.