Preethi S Shetty

Dr. Preethi S Shetty


Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 January 2025 in Current Oncology
Verified
Journal Article
Open access
PDF file
YVYogesh Kumar Vashist
Yogesh Kumar Vashist
AGAman Goyal
Aman Goyal
PSPreethi S Shetty
Preethi S Shetty
SGSergii Girnyi
Sergii Girnyi
CTCwalinski Tomasz
Cwalinski Tomasz
RORodolfo J Oviedo
Rodolfo J Oviedo
Background: Esophageal cancer, the seventh most common malignancy globally, requires esophagectomy for curative treatment. However, esophagectomy is associated with high postoperative morbidity and mortality, highlighting the need for minimally invasive approaches. Robotic-assisted surgery has emerged as a promising alternative to traditional open and minimally invasive esophagectomy (MIE), offering potential benefits in improving clinical and oncological outcomes. This review aims to assess the postoperative morbidity and outcomes of robotic surgery. Methods: A comprehensive review of the current literature was conducted, focusing on studies evaluating the role of robotic-assisted surgery in esophagectomy. Data were synthesized on the clinical outcomes, including postoperative complications, survival rates, and recovery time, as well as technological advancements in robotic surgery platforms. Studies comparing robotic-assisted esophagectomy with traditional approaches were analyzed to determine the potential advantages of robotic systems in improving surgical precision and patient outcomes. Results: Robotic-assisted esophagectomy (RAMIE) has shown significant improvements in clinical outcomes compared to open surgery and MIE, including reduced postoperative pain, less blood loss, and faster recovery. RAMIE offers enhanced thoracic access, with fewer complications than thoracotomy. The RACE technique has improved patient recovery and reduced morbidity. Fluorescence-guided technologies, including near-infrared fluorescence (NIRF), have proven valuable for sentinel node biopsy, lymphatic mapping, and angiography, helping identify critical structures and minimizing complications like anastomotic leakage and chylothorax. Despite these benefits, challenges such as the high cost of robotic systems and limited long-term data hinder broader adoption. Hybrid approaches, combining robotic and open techniques, remain common in clinical practice. Conclusions: Robotic-assisted esophagectomy offers promising advantages, including enhanced precision, reduced complications, and faster recovery, but challenges related to cost, accessibility, and evidence gaps must be addressed. The hybrid approach remains a valuable option in select clinical scenarios. Continued research, including large-scale randomized controlled trials, is necessary to further establish the role of robotic surgery as the standard treatment for resectable esophageal cancer.

10 September 2021 in Langenbeck's Archives of Surgery
Verified
Journal Article
Open access
PDF file
NKNaveena AN Kumar
Naveena AN Kumar
AJAnmi Jose
Anmi Jose
NUNawaz Usman
Nawaz Usman
KRKeshava Rajan
Keshava Rajan
MMMurali Munisamy
Murali Munisamy
MRMahadev Rao
Mahadev Rao
Purpose: There has been an increase in the incidence of signet ring cell cancer (SRCC) of the stomach and gastro-esophageal junction (GEJ). The multistage carcinogenesis involving genetic and epigenetic aberrations may have a major role in the increasing incidence of SRCC. Although there are numerous studies on the prognostic value of SRCC, they are markedly inconsistent in their results, making it impossible to draw any meaningful conclusions. We aimed to examine the available evidences on molecular alterations and stage-stratified treatment approaches in SRCC of the stomach and GEJ. Methods: A systematic search was carried out in PubMed. Studies available in English related to SRCC of stomach and gastro-esophageal junction were identified and evaluated. Results: This study reviewed the current evidence and provided an insight into the molecular alterations, stage-stratified treatment approaches, and future challenges in the management of SRCC of the stomach and GEJ. Specific therapeutic strategies and personalized multimodal treatment have been recommended based on the tumor characteristics of SRCC. Conclusion: Multistage carcinogenesis involving genetic and epigenetic aberrations in SRCC is interlinked with stage-dependent prognosis. Specific therapeutic strategy and personalized multimodal treatment should be followed based on the tumor characteristics of SRCC. Endoscopic resection, radical surgery, and perioperative chemotherapy should be offered in carefully selected patients based on stage and prognostic stratification. Future studies in genetic and molecular analysis, histopathological classification, and options of multimodality treatment will improve the prognosis and oncological outcomes in SRCC of gastric and GEJ.

28 November 2023 in Colorectal Disease
Verified
Journal Article
Closed access
ADAshwin L. Desouza
Ashwin L. Desouza
Mufaddal KaziMufaddal Kazi
Mufaddal Kazi
SNShravan Nadkarni
Shravan Nadkarni
PSPreethi S Shetty
Preethi S Shetty
VTVipin T
Vipin T
ASAvanish Saklani
Avanish Saklani

25 March 2025 in Clinical and Translational Science
Verified
Journal Article
Open access
MKMehta Vedant Kamal
Mehta Vedant Kamal
KPKrishnananda Prabhu
Krishnananda Prabhu
KSKrishna Sharan
Krishna Sharan
APAnanth Pai
Ananth Pai
Sanjiban ChakrabartySanjiban Chakrabarty
Sanjiban Chakrabarty
NKNaveena AN Kumar
Naveena AN Kumar
Oral squamous cell carcinoma (OSCC) is a common form of cancer, with 390,000 new cases estimated for 2022. OSCC has a poor prognosis, largely due to a high recurrence rate and resistance to therapy. Cancer cells develop resistance to standard therapy owing to various factors, such as genetic predispositions, alterations in the apoptotic pathway coupled with DNA repair pathways, drug efflux, and drug detoxification. This review is aimed at exploring the crucial role of paraoxonase 2 (PON2) in conferring resistance to chemotherapy and radiotherapy in OSCC cells. PON2, an antioxidant enzyme, protects cancer cells from the oxidative stress caused by these treatments. By influencing apoptotic pathways and DNA repair mechanisms, PON2 can reduce the effectiveness of therapy. This review is an attempt to explore the complex molecular mechanisms modulated by PON2, such as the mitigation of oxidative stress, enhancement of DNA repair, apoptosis regulation, drug efflux modulation, and drug detoxification, which decrease treatment efficacy.

22 September 2022 in Journal of Radiotherapy in Practice
Verified
Journal Article
Open access
PDF file
UVUmesh Velu
Umesh Velu
PSPreethi S Shetty
Preethi S Shetty
KSKrishna Sharan
Krishna Sharan
SSShirley Salins
Shirley Salins
ASAnshul Singh
Anshul Singh
Introduction: This study aimed to determine the radiation dose to the spleen in adjuvant chemoradiotherapy for gastric cancer, resulting in haematological toxicities. Methods: This retrospective analysis of a prospectively maintained database was conducted at a tertiary referral cancer centre. All patients with biopsy-proven non-metastatic gastric adenocarcinoma planned for adjuvant chemoradiotherapy from January 2017 to December 2021 were included. The mean dose to the spleen (Dmean) was estimated and correlated with the development of haematological toxicities. Results: The mean spleen volume was 186·65 cc. The Dmean to the spleen was 35·35 Gy (20–42 Gy). Grade 3 leukopenia was observed in 67%, grade 4 in 15%, and grade 3 thrombocytopenia was noted in 41% of patients. Radiotherapy (RT) dose > 35·5 Gy to the spleen resulted in ≥ grade 3 leukopenia. RT dose ≥ 36·5 Gy resulted in grade 3 thrombocytopenia. The occurrence of leukopenia and thrombocytopenia was also affected by the location of the primary gastric cancer (higher incidence in distal than in proximal tumours). Conclusion: The spleen should be considered as an important organs at risk during adjuvant RT for gastric cancer. Dmean to the spleen should be < 35·5 Gy to prevent major haematological toxicities.

18 November 2025 in Clinical and Translational Science
Verified
Journal Article
Open access
DRDipali Raju
Dipali Raju
SPSwathi Prabhu
Swathi Prabhu
AMAnjal Maria
Anjal Maria
SSShriya Narendra Shet Shirodkar
Shriya Narendra Shet Shirodkar
RDRama Rao Damerla
Rama Rao Damerla
NKNaveena AN Kumar
Naveena AN Kumar
Gastric Signet Ring Cell Carcinoma (GSRCC) is an increasingly recognized subtype of gastric cancer, particularly prevalent in South Asian populations and regions within India. This carcinoma is distinguished by its abundant cytoplasmic mucinous cells and aggressive clinical behavior, often affecting younger individuals and leading to a poor prognosis due to its advanced‐stage presentation and resistance to standard treatments. A critical factor in its progression is the tumor's uniquely immunosuppressive and stromal‐rich microenvironment, characterized by dysfunctional immune infiltrates, activation of cancer‐associated fibroblasts, extracellular matrix remodeling, and complement cascade dysfunction. Recent research has highlighted the significance of key biomarkers, including MSMB, AGR2, CLDN18.2, and notably GRIN2D, which play roles in tumor angiogenesis, immune evasion, and metabolic reprogramming. The interaction of these elements contributes to therapeutic resistance and immune escape, thereby reducing the effectiveness of chemotherapy and checkpoint inhibitor immunotherapies. Innovative strategies that integrate stromal‐targeting agents, complement modulators, anti‐CLDN18.2 antibodies, and novel GRIN2D‐targeted therapies, along with precision molecular profiling, offer potential for enhancing patient outcomes. Tailored approaches that incorporate early detection and dynamic biomarker monitoring may ultimately transform GSRCC management toward personalized, evidence‐based therapies and prevention.