From the results obtained, we observed that application of topical agents used in radio-induced skin disease were able to significantly reduce the erythema extent compared to the non-treated group.
Aim: This retrospective observational study evaluated the role of hypo-fractionated stereotactic radiotherapy (SRT) in patients with oligo-progressive metastatic renal cell carcinoma (mRCC) treated with first-line oral tyrosine kinase inhibitors (TKI). Data on local control, delay of further progression, and safety are reported. Patients and Methods: Between January 2010 and December 2016, 28 patients with mRCC who showed oligo-progressive disease while receiving first-line pazopanib were treated with hypofractionated SRT to progressive metastatic sites to delay the change of systemic therapy. First and second progression-free survival (PFS-1 and PFS-2) were recorded, as well as objective response and toxicity. Results: After pazopanib therapy, nine partial remissions (32%), 12 stable disease (43%) and seven progressions (25%) were recorded. The median time to progression from first-line pazopanib until oligo-progression was 9.45 months (PFS-1 range=2-30 months). Seventeen patients (61%) showed progression at pre-existing tumor sites, and 11 patients (39%) showed the appearance of new metastases. Progression-free survival after radiation therapy was 4.55 months (PFS-2 range=1-11 months). PFS-1 plus PFS-2 was 14.0 months (range=3-41 months). Severe grade 3-4 toxicities were seen only occasionally. Conclusion: Patients with oligo-progressive mRCC treated with first-line pazopanib may benefit from hypo-fractionated high-dose SRT at progressing sites achieving a further increase in median progression-free survival. Further studies and prospective validation are required to establish if this minimally invasive approach may have a positive impact on overall survival and reported outcomes.Metastatic renal cell carcinoma (mRCC) remains a significant cause of cancer-related death in the Western world since nearly 30% of patients with RCC present with synchronous metastases at diagnosis, and up to one-third of surgically treated patients subsequently develop recurrent and metastatic disease (1-3).The clinical availability of tyrosine kinase inhibitors (TKI) has positively improved the outcome of patients with mRCC who are usually divided into risk categories based on prognostic models: A favorable, no-risk group with a median overall survival (OS) of 43.2 months; an intermediate-risk group with one to two risk factors and an OS of 22.5 months; and a poor 7037
e21580 Background: EGFR tyrosine kinase inhibitors (TKIs) represent the standard first-line therapy for advanced non-small cell lung cancer (NSCLC) patients with activating EGFR mutations. However, despite initial marked responses, tumors invariably develop acquired resistance to TKIs. Oligoprogression is commonly observed during treatment with oncogene-directed therapies, including EGFR TKIs, and refers to patients who experience disease progression only in limited sites as a result of heterogeneous mechanisms of resistance. The use of local ablative treatments for these resistant lesions may extend the duration of TKI therapy and potentially improve long-term disease control and survival. We e retrospectively analyzed the efficacy of EGFR TKI therapy continuation with high-dose hypofractionated radiation therapy (RT), in EGFR-mutant NSCLC patients with oligoprogressive disease. Methods: Patients with metastatic EGFR mutant NSCLC who developed oligoprogression during first-line treatment with gefitinib were included in this analysis. We evaluated progression-free survival 1 (PFS 1), defined as the time from initiation of TKI therapy until development of oligoprogression or death, and PFS 2, defined as time of focal progression until further progression of disease or death. Overall survival and safety were also assessed. Results: Thirty-six patients were included in the study. The median PFS 1 was 12.5 (4.0-23.2) months. High-dose hypofractionated RT consisted of intensity-modulated RT in 23 patients (64%) and stereotactic radiotherapy in 13 cases (36%). The median PFS 2 was 6.3 (2-12.5) months. Overall survival was 38.7 months (9.0-46.3). The treatment was well-tolerated and no patient had to discontinue TKI therapy because of adverse events during radiotherapy. Conclusions: Our therapeutic strategy, including high-dose hypofractionated RT in addition to TKI therapy, was feasible in the clinical setting and was associated with significant prolongation of disease control and improvement of survival outcomes, while being associated with manageable side effects. Our study further support the use of definitive therapeutic approaches in oligoprogressive disease, especially in oncogene-driven tumors. Molecular profiling of metastatic sites remains crucial to identify novel biomarkers, involved in the development of acquired resistance and oligoprogression, that may be useful to select patients for local treatments.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.