Introduction There is a lacuna of prospective studies on soft tissue sarcoma (STS) from the Indian subcontinent in published literature. Objectives We conducted this study to describe the clinical profile and outcomes of STS in North India. Materials and Methods This is a single-center, prospective, observational study conducted from October 2017 to September 2019. All consecutive patients aged ≥18 years with histopathological diagnosis of STS were enrolled. The study end points included overall response rate, progression-free survival (PFS), and overall survival (OS). Results A total of 140 patients were included with a median duration of follow-up of 14 months (range: 1–25 months). The median age of patients was 45 years. The median duration of symptoms before diagnosis was 5 months (range: 1–18 months). The most common histopathologic subtype was undifferentiated pleomorphic STS (22%). Of 105 localized patients, 21 received neoadjuvant therapy with external beam radiotherapy and/or doxorubicin-based chemotherapy and reported partial response in 38% (8/21) of the patients; the remaining 62% (13/21) of the patients had stable disease. Neoadjuvant therapy resulted in nonsignificantly higher complete resection rates with relative risk of 2.37 (p = 0.19). Of the remaining 35 metastatic STS patients, 31 received chemotherapy and reported partial response in 39.1% (n = 9/23), stable disease in 30.4% (n = 7/23), and disease progression in 30.4% (n = 7/23) of the patients. For localized STS patients, 1-year disease-free survival (DFS) and OS rates were 87.6 ±3.5 and 95.3 ± 2.3%, respectively. The median OS for metastatic STS patients was 23.90 months (95% confidence interval [CI]: 7.43–40.36). Among metastatic STS, median OS was not reached for those who underwent curative resection versus 12.66 months (95% CI: 9.28–16.04) for those who received systemic therapy alone. Conclusion Median age of 45 years is a decade earlier than seen in the Western population. Neoadjuvant therapy improved complete resection rates, though it was statistically nonsignificant. Curative resection among metastatic STS patients improves survival.
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