Publications by authors named "Somasundar P"

Background: Modern immunotherapy with checkpoint inhibitors revolutionized cancer treatment and outcomes. This study aims to demonstrate how immunotherapy has impacted the national landscape of systemic treatment and palliative care in advanced hepatocellular carcinoma (HCC).

Methods: Retrospective cohort selecting patients from the U.

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Introduction: Significant gains in advanced melanoma have been made through immunotherapy trials. Factors influencing equitable access and survival impact of these novel therapies are not well-defined.

Method: Retrospective analysis using National Cancer Database of patients with advanced stage III and IV melanoma from 2004 to 2021.

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Introduction: Studies outlining the unique burden of geriatric medical conditions and syndromes among older adults undergoing major oncological surgery are lacking, along with understanding of the goals of care for this population.

Materials And Methods: We conducted a single-institutional review of the initial 50 patients who enrolled in the American College of Surgeons' Geriatric Surgery Verification Program (GSV) program implemented for those ≥65 years undergoing major oncological surgery during the year 2023. Patient variables were categorized into four domains - somatic, functional, psychological, and social.

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Introduction: Evidence demonstrating overall survival benefit of neoadjuvant chemotherapy (NAC) followed by surgical resection over upfront surgical resection for resectable pancreatic ductal adenocarcinoma (PDAC) has been mixed. The time to first therapy (TTFT) variable has not been studied as a contributing factor.

Methods: A nationwide retrospective analysis using the National Cancer Database to evaluate patients with clinical stage T1 and T2 PDACs from 2010 to 2020.

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Background: Patients older than 65 years have unique needs and treatment outcomes goals. The objective of this study was to evaluate the impact of Geriatric Surgery Verification (GSV) initiative in oncology patients ≥65 years undergoing major abdominal surgeries.

Study Design: We implemented the American College of Surgeons' GSV program protocols for patients 65 and older starting in 2022.

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Background: Medicaid expansion afforded increased healthcare access to low-income Americans contributing to a positive impact on cancer outcomes. However, it is unclear if these benefits were mainly due to enhanced access to cancer screening and earlier diagnosis versus access to cancer treatment METHODS: The National Cancer Database (NCDB) was queried between 2010-2021 for Medicaid and uninsured patients with GI malignancies. Patients were stratified by screenable (SGI) and non-screenable (NGI) cancers and expansion state (ES) categories: early (EES) and late (LES) adopters, and non-expansion state (NES) cohorts.

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Frailty is a common phenomenon in older adult population and associated with an elevated risk of adverse health outcomes. Recent studies have demonstrated that patients with frailty undergoing surgery had a significantly higher morbidity and mortality compared to those without frailty. This is particularly important in patients with cancer because the prevalence of frailty is persistently high across a spectrum of primary cancers.

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Background: Despite studies demonstrating that patients with peritoneal metastases from low-grade appendiceal adenocarcinoma (AA) do not respond well to systemic chemotherapy (SC), patients frequently undergo combination of SC with cytoreductive surgery/hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) regardless of grade.

Methods: A nationwide retrospective analysis using the National Cancer Database evaluated patients with AA with peritoneal metastasis from 2016 to 2021. Cox proportional hazards model was used to evaluate the impact of SC in addition to CRS/HIPEC on overall survival (OS) stratified by tumor grade.

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Malnutrition in geriatric cancer patients is a leading cause of morbidity and mortality. A nutrition risk assessment should be done early to identify and treat those at risk for cancer-related malnutrition. The goal of this study was to assess nutritional status in geriatric patients diagnosed with all cause cancer.

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Purpose: The survival outcomes of patients with primary uveal melanomas based on Medicaid status have not been previously discussed in the literature.

Methods: The Surveillance, Epidemiology, and End Results Medicaid database were utilized to identify patients with primary uveal melanomas diagnosed between 2006 and 2013. The Kaplan-Meier method was utilized to construct 5-year survival curves in adult, non-elderly patients.

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Background: The impact of Medicaid status on survival outcomes of patients with spinal primary malignant bone tumors (sPMBT) has not been investigated.

Methods: Using the SEER-Medicaid database, adults diagnosed between 2006 and 2013 with sPMBT including chordoma, osteosarcoma, chondrosarcoma, Ewing sarcoma, or malignant giant cell tumor (GCT) were studied. Five-year survival analysis was performed using the Kaplan-Meier method.

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Background: Pancreatic adenocarcinoma (PAC) has one of the highest mortality rates among all malignancies. While previous research has analyzed socioeconomic factors' effect on PAC survival, outcomes of Medicaid patients are understudied.

Methods: Using the SEER-Medicaid database, we studied non-elderly, adult patients with primary PAC diagnosed between 2006 and 2013.

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Background: Previous studies have demonstrated disparities in survival surrounding hepatocellular carcinoma (HCC) across a variety of socio-demographic factors; however, the relationship between Medicaid-status and HCC survival is poorly understood.

Methods: We constructed 5-year, disease-specific survival curves using the Kaplan-Meier method and performed an adjusted survival analysis using multivariate Cox-proportional hazard regression.

Results: We analyzed 17,059 non-elderly patients (12,194 non-Medicaid, 4875 Medicaid) diagnosed between 2006 and 2013 and found that Medicaid status was not associated with higher risk of diseases-specific death compared to other insurance types (p = .

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Background: Accurate quality of life (QoL) data and functional results after cancer surgery are lacking for older patients. The international, multicenter Geriatric Oncology Surgical Assessment and Functional rEcovery after Surgery (GOSAFE) Study compares QoL before and after surgery and identifies predictors of decline in QoL.

Methods: GOSAFE prospectively collected data before and after major elective cancer surgery on older adults (≥70 years).

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Background Locally advanced primary tumors have been associated with poor overall survival (OS) in non-metastatic colon cancer. However, their impact on metastatic colon cancer (mCC) is not fully defined. The association between primary tumor location and prognosis in mCC is also evolving.

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Current guidelines recommend discussion of adjuvant chemotherapy (AC) for stage II colon cancer (CC) with high-risk features despite lacking conclusive randomized trial data. We examined AC administration in this population and its effect on overall survival (OS) for available patient, tumor, and treatment characteristics Using National Cancer Data Base, a cohort of 42,971 stage II CC patients diagnosed from 2004 to 2009, who underwent surgery with curative intent, was identified. Chi-square test and multivariate logistic regression were used to analyze baseline characteristics and to calculate odds of chemotherapy administration, respectively.

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Objective: Older patients with cancer value functional outcomes as much as survival, but surgical studies lack functional recovery (FR) data. The value of a standardized frailty assessment has been confirmed, yet it's infrequently utilized due to time restrictions into everyday practice. The multicenter GOSAFE study was designed to (1) evaluate the trajectory of patients' quality of life (QoL) after cancer surgery (2) assess baseline frailty indicators in unselected patients (3) clarify the most relevant tools in predicting FR and clinical outcomes.

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Background: Lymph node involvement (LNI) is an important prognostic factor in colon cancer. But, variations in LNI among different age groups are less known. Adequate lymph node evaluation (LNE) requires assessment of ≥12 nodes.

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A growing majority of people with cancer is composed of older patients. For many such patients, independence and quality of life are as important as prolongation of survival, emphasizing the need for treatments that are not only effective but also well-tolerated. Given age-related decline in organ function and the prevalence of comorbidities and polypharmacy, optimum management is complex and requires collaboration between oncologists and geriatricians.

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Background: The primary objective of our study was to assess the association of primary tumor lymph node ratio (LNR) in stage IV colorectal adenocarcinomas (CRC) with overall survival (OS) and the extent of metastatic disease in the liver.

Methods: We analyzed data on 53 stage IV CRC patients who underwent surgical resection of the primary tumor. The median LNR of 0.

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Portomesenteric venous thrombosis is a rare complication reported in only a few cases involving laparoscopic bariatric surgery. We report a case of a 44-year-old woman who presented 14 days after recent laparoscopic sleeve gastrectomy with the chief complaint of abdominal pain and associated nausea. Abdominal CT demonstrated thrombi in her superior mesenteric, portal and splenic veins.

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Chimeric antigen receptor expressing T cells (CAR-T) are a promising form of immunotherapy, but the influence of age-related immune changes on CAR-T production remains poorly understood. We showed that CAR-T cells from geriatric donors (gCAR-T) are functionally impaired relative to CAR-T from younger donors (yCAR-T). Higher transduction efficiencies and improved cell expansion were observed in yCAR-T cells compared with gCAR-T.

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