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12 result(s) for "Kothari, Rushabh"
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Prognostic value of tumour-associated regulatory T-cells as a biomarker in non-small cell lung cancer: a systematic review and meta-analysis
Background Tumour, nodes, and metastases (TNM) staging has been deficient in prognosticating in patients suffering from non-small cell lung cancer (NSCLC). To supplement TNM staging, this systematic review and meta-analysis aimed to evaluate the prognostic value of the regulatory T cells (Treg). Methods A keyword search was conducted in MEDLINE and EMBASE for full-text original human studies from any region published in English during the last 12 years. Eligible for inclusion were studies evaluating the prognostic value of the number of Treg cells in NSCLC except case studies, case series, systematic reviews, and meta-analyses. Two reviewers (one reviewer used an automation tool) independently screened the studies and assessed risk-of-bias using the Quality in Prognosis Studies (QUIPS) tool. Meta-analysis was done for studies reporting significant multivariate hazard ratio (HR). Results Out of 809 retrievals, 24 studies were included in the final review. The low number of Treg cells was found significantly associated with improved overall survival (pooled log OR, 1.646; 95% CI, 1.349, 1.944; p (2-tailed) < .001; SE, 0.1217), improved recurrence-free survival (HR, 1.99; 95% CI, 1.15, 3.46; p  = .01), improved progression-free survival (pooled log OR, 2.231; 95% CI, 0.424, 4.038; p (2-tailed) .034; SE, 0.4200), and worse disease-free survival (pooled log OR, 0.992; 95% CI, 0.820, 1.163; p (2-tailed) .009; SE, 0.0135), especially when identified by forkhead box P3 (FOXP3), in any stage or non-metastatic NSCLC. Conclusion A low number of Treg cells indicated better survival, suggesting its potential use as a prognostic biomarker in NSCLC. Systematic review registration The protocol of this review was prospectively registered on PROSPERO on August 28, 2021, and was assigned the registration number CRD42021270598. The protocol can be accessed from PROSPERO website.
A unique case of adamantinoma-like Ewing sarcoma in the calcaneus, exhibiting prominent squamous differentiation and displaying EWSR1 gene rearrangement
Adamantinoma-like Ewing sarcoma is uncommonly reported in the skeletal sites, including small bones of the feet.A 15-year-old girl presented with pain and swelling in her left foot, leading to difficulty in walking for 8 months. Plain radiograph revealed an ill-defined, lytic-sclerotic lesion without significant periosteal reaction in her left calcaneus. Magnetic resonance imaging (MRI) revealed an expansile lesion involving the anterior calcaneus, which was hypointense on T1 and heterogeneously hyperintense on T2-weighted sequences, infiltrating the adjacent bones and soft tissues. On imaging, the differential diagnoses considered were a giant cell tumor and other primary bone tumors.Histopathological examination revealed a tumor composed of small round cells, with interspersed keratin pearls. Immunohistochemically, the tumor cells were positive for CD99/MIC2, pan-cytokeratin (AE1/AE3), p40, p63, NKX2.2, and synaptophysin. Diagnosis of adamantinoma-like Ewing sarcoma was offered on the initial biopsy. Furthermore, the tumor cells revealed EWSR1 gene rearrangement by fluorescence in situ hybridization, confirming this diagnosis. The patient underwent neoadjuvant chemotherapy, had a poor response, and finally underwent below-knee amputation.This constitutes a rare case of adamantinoma-like Ewing sarcoma in the calcaneus. Ewing sarcoma may be considered as a differential diagnosis for intraosseous lytic-sclerotic lesions, even without significant periosteal reaction, at unusual sites, such as the bones of the foot. Awareness of this entity and application of ancillary techniques is recommended for its exact diagnosis and in differentiating this rare variant from its diagnostic mimics. This case also indicates a poor chemotherapy response in this unusual variant of Ewing sarcoma, occurring in the calcaneus.
Fludarabine melphalan versus fludarabine treosulfan for reduced intensity conditioning regimen in allogeneic hematopoietic stem cell transplantation: a retrospective analysis
Various reduced-intensity conditioning (RIC) regimens are used to decrease toxicity while providing comparable outcomes to myeloablative regimens. We compared toxicity and outcomes between two RIC regimens, fludarabine with melphalan (Flu-Mel) and fludarabine with treosulfan (Flu-Treo), retrospectively over a 10-year period in two donor groups, matched related donor (MRD)/matched unrelated donor (MUD) and haploidentical (Haplo) transplants. The study included 138 patients, of which 105 received MRD/MUD (Flu-Mel: 94, Flu-Treo: 11) and 33 Haplo (Flu-Mel: 17, Flu-Treo: 16) transplants. In the MRD/MUD group, 44 (47%) of patients who received Flu-Mel had grade 3/4 oral mucositis compared to 1 (9%) who received Flu-Treo ( P  = 0.02). Corresponding numbers in the Haplo group were 7 (41%) and 1 (6%). Grade 3/4 diarrhoea was more frequent with Flu-Mel than Flu-Treo in the Haplo group (41% vs 6%; P  = 0.039), but not the MRD/MUD group. Median follow-up time for all patients was 4.8 years. Five-year OS in the MRD/MUD group was 62% with Flu-Mel versus 53% with Flu-Treo ( P  = 0.0694). Similarly, 5-year OS was 41% with Flu-Mel and 28% with Flu-Treo ( P  = 0.770) in the Haplo group. Severe mucositis and diarrhoea were significantly less frequent with Flu-Treo than Flu-Mel. Flu-Treo provided comparable outcomes to Flu-Mel in all donor transplants.
Poor Risk Advanced Renal Cell Carcinoma: Outcomes from a Registry in a Tertiary Cancer Center
Abstract Background: Poor-risk advanced Renal cell carcinoma (RCC) are an under-evaluated and difficult to treat subset of patients with poor prognosis. While Temsirolimus is the approved first line therapy for this category, Tyrosine kinase inhibitors (TKIs) are also commonly uses as initial treatment. We present an analysis of poor-risk advanced RCC treated in our institute. Materials and Methods: Patients diagnosed as poor-risk (as per Heng criteria) advanced RCC from June 2008 to December 2015 were analysed for baseline demographics, treatment received, toxicity (primarily Grade 3 and Grade 4), response rates (RR) and survival. Results: 60 patients (43 males, 17 females) with a median age of 53 years were included for final analysis. Median ECOG PS was 1, clear cell was the predominant histology (63.3%), and 46.7% of patients had greater than 2 sites of metastases. Sorafenib, Sunitinib, Temsirolimus and Pazopanib were used to treat 43.3%, 36.7%, 8.3% and 6.7% of patients respectively, while 3 patients were offered upfront best supportive care. Common adverse events included skin rash (31.5%), HFS (Grade 2 and 3 - 30.8%), mucositis (26.3%), hypertension (24.5%), and dyslipidaemias (22.8%). 41 patients were available for response - overall response rate observed was 15%, while clinical benefit rate was 50%. Median progression free survival was 5.78 months (4.67-6.89) and median overall survival (OS) was 10.05 months (7.31-12.79). Conclusion: A majority of poor-risk metastatic RCC patients in our study were treated with TKIs and the survival outcomes appear to suggest that this strategy is a feasible alternative to Temsirolimus in the Indian setting.
Prevalence and types of cancer in older Indians: A multicentric observational study across 17 institutions in India
The global demographic and epidemiological transition have led to a rapidly increasing burden of cancer, particularly among older adults. There are scant data on the prevalence and demographic pattern of cancer in older Indian persons. This was a multicentric observational study conducted between January 2019 and December 2020. Data were retrieved from existing electronic databases to gather information on two key variables: the total number of patients registered with oncologists and the number of patients aged 60 years and above. The primary objective was to determine the percentage of older adults among patients with cancer served by these hospitals. Secondary objectives included understanding the prevalence of different types of cancer in the older population, and the sex- and geographic distribution of cancer in older Indian patients. We included 272,488 patients with cancer from 17 institutes across India. Among them, 97,962 individuals (36 %) were aged 60 years and above. The proportion of older adults varied between 20.6 % and 53.6 % across the participating institutes. The median age of the older patients with cancer was 67 (interquartile range, 63–72) years. Of the 54,281 patients for whom the details regarding sex were available, 32,243 (59.4 %) were male. Of the 56,903 older patients, head and neck malignancies were the most prevalent, accounting for 11,158 cases (19.6 %), followed by breast cancer (6260 cases, 11 %), genitourinary cancers (6242 cases, 10.9 %), lung cancers (6082 cases, 10.7 %), hepatopancreaticobiliary (6074, 10.7 %), and hematological malignancies (5226 cases, 9.2 %). Over one-third of Indian patients with cancer are aged 60 years and above, with a male predominance. Head and neck, breast, and genitourinary cancers are the most prevalent in this age group. Characterizing the burden of cancer in older adults is crucial to enable tailored interventions and additional research to improve the care and support for this vulnerable population. [Display omitted] •Of 2,72,488 patients with cancer from 17 Indian institutes, 97962 (36 %) were >/= 60 years.•Male:female ratio was 1.46:1.•Top 5 cancers were head-and-neck (19.6 %), breast (11 %), genitourinary (11 %), lung (11 %), and hepatopancreaticobiliary (11 %).
Efficacy and Safety of BP02 (Trastuzumab Biosimilar) in HER2-Positive Metastatic Breast Cancer: A Multicenter Phase III Study
Background and Objective Trastuzumab targets human epidermal growth factor receptor 2 (HER2) receptors and is indicated for treating HER2-positive metastatic breast cancer. BP02, a recombinant IgG1 kappa humanized monoclonal antibody, is being developed as a trastuzumab biosimilar. The objective of this study was to evaluate the equivalence of BP02 with reference trastuzumab (RT: Herceptin ® -EU) in patients with HER2-positive metastatic breast cancer. Methods This double-blinded, 1:1 randomized, parallel-group, active-controlled, phase III equivalence trial recruited women aged 18–75 years with histologically/cytologically confirmed HER2- positive, locally recurrent or metastatic breast cancer with systemic metastasis, from 59 sites in India. Patients were randomly allocated 1:1 stratified by estrogen receptor/progesterone receptor status to receive BP02/RT (8-mg/kg loading dose on day 1-cycle 1, 6 mg/kg on day 1-cycles 2–8, of each 3-week cycle) combined with docetaxel (75 mg/m 2 on day 1-cycles 1–8) [induction phase]. Participants with complete or partial response, or stable disease at the end of the induction phase continued the study drug until disease progression/treatment discontinuation [maintenance phase]. The primary efficacy endpoint was the objective response rate per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. Results Between 23 September, 2020 and 16 September, 2022, 690 patients were recruited ( n = 345 each to BP02/RT). At the end of the induction phase (intent-to-treat population), a similar proportion of patients achieved an objective response rate with BP02 ( n = 231 [67.0%], 95% confidence interval [CI] 62.0, 71.9) and RT ( n = 238 [69.0%], 95% CI 64.1, 73.9). The 95% CI of risk difference (−2.03, 95% CI −9.15, 5.09) and 90% CI of risk ratio (0.97, 90% CI 0.89, 1.06) were within equivalence margins of ± 13% and (0.80, 1.25), respectively. Treatment-emergent adverse events leading to treatment withdrawal were reported in 2.9% and 3.2% patients with BP02 and RT, respectively. Conclusions BP02 showed an equivalent efficacy and similar safety profile to RT at the end of 24 weeks. Clinical Trial Registration CTRI Number: CTRI/2020/04/024456.
Outcomes with second-line chemotherapy in advanced pancreatic cancers: A retrospective study from a tertiary cancer center in India
INTRODUCTION: Approximately 40% of patients receiving first-line chemotherapy (CT1) for advanced pancreatic adenocarcinomas (PDACs) receive second-line chemotherapy (CT2). The most appropriate regimen to be used has not been identified, and data regarding CT2 in advanced PDAC from India are scarce. MATERIALS AND METHODS: A retrospective analysis of advanced PDAC patients who were evaluated during the period of August 2013 to August 2016 in the Department of GI medical Oncology, at Tata Memorial Hospital was conducted. Patients with histologically proven PDAC and started on CT2 postprogression or recurrence after CT1 were included for analysis. RESULTS: A total of 237 patients received CT1 in the period of study, of which 76 patients (39.66%) received CT2. The median age of patients was 59.5 years (range: 38-82), majority were male (69.7%), and 14 patients (18.4%) had undergone curative pancreatic resection at baseline. The common regimens used as CT2 were modified 5 fluorouracil/leucovorin/irinotecan (mFOLFIRI) (35.5%), gemcitabine-nab paclitaxel (18.4%), and gemcitabine-erlotinib (11.8%). Common grade 3/4 toxicities noted were fatigue (10.3%), anemia (10.3%), neutropenia (7.4%), and vomiting (7.4%). Dose reductions were required in 32.9% of patients. RR, DCR, median event free survival, and median overall survival were 21.1%, 48.7%, and 5.94 months (95% confidence intervals [CI]: 4.68-7.20) and 8.08 months (95% CI: 7.11-9.07) respectively. CONCLUSIONS: CT2 in advanced PDAC appears feasible in the Indian setting if the patients are appropriately selected and they can be treated with acceptable toxicities and reasonable outcomes.
Design and analysis of multifunctional structures for embedded electronics in unmanned aerial vehicles
Multifunctional structures are a new trend in the aerospace industry for the next generation structural design. Many future structures are expected to be something in addition to a load bearing structure. The design and analysis of multifunctional structures combining structural, electrical and thermal functionalities are presented here. The sandwich beam is considered as a starting point for the load bearing structure and then it is modified with a cavity to embed avionics and thermal controls. The embedded avionics inside the load bearing structure would allow weight reduction of the aerospace vehicle due to elimination of separate electronics housing, interconnects, cables etc. The cavity reduces strength of the structure so various reinforcements methods are evaluated. The result of various reinforcements and their effectiveness are presented. The current generation of electronics produce massive amount of heat. In the case of embedded electronics, the excessive heat presents a major challenge to the structural and heat transfer engineers. The embedded nature of electronics prevents the use of the classical heat dissipative methods such as fans and high velocity air flows, etc. The integrated thermal control of the electronics has been designed using passive heat transfer device and highly optimized particulate composite thermal interface material (TIM). The TIMs are used to fill the air gaps and reduce contact resistance between two surfaces, such as electronics and heat dissipators. The efficiency of TIM directly affects the overall heat transfer ability of the integrated thermal control system. The effect of the particles at micron and nano scales are studied for the particulate composite TIM. The thermal boundary resistance study for the particulate composite TIM with nano silica particles is presented in this thesis. The FEA analysis is used to model thermal boundary resistance and compared with the theoretical micromechanics model. The heat pipes are chosen as a part of passive heat transfer device due to their durability and excellent thermal conductivities. The multifunctional system consisting of all above components is modeled for unmanned aerial vehicle (UAV) at subsonic air speeds to demonstrate the validity of the design.
Development, optimization, and preliminary evaluation of a novel artificial intelligence tool to promote patient health literacy in radiology reports: The Rads-Lit tool
Radiology reports are an integral part of patient medical records; however, these reports often contain complex medical terminology that are difficult for patients to comprehend, potentially leading to anxiety, misunderstanding, and misinterpretation. The development of user-friendly instruments to improve understanding is thus critically important to enhance health literacy and empower patients. In this study, we introduce a novel artificial intelligence (AI) interface, the Rads-Lit Tool, which can simplify radiology reports for patients using natural language processing (NLP) techniques. This manuscript presents the development process, methodology, and results of the Rads-Lit Tool, demonstrating its potential to simplify radiology reports across various examination types and complexity levels. Our findings highlight that patient-facing AI-driven tools can enhance patient health literacy and foster improved patient-provider communication in radiology.