Publications by authors named "Udupa Karthik"

Background Clinicians use prognostic biomarker/multi-gene-based tests for predicting recurrence in hormone receptor-positive/HER2-negative (HR+/HER2-) early-stage breast cancer (EBC). CanAssist Beast (CAB) uses the expression of five protein biomarkers in combination with tumor-specific parameters such as tumor size, histopathological grade, and lymph node status to predict the risk of distant recurrence within five years of diagnosis for patients with HR+/HER2-, EBC. The current study aimed to evaluate the impact of prognostic tests on adjuvant chemotherapy decisions by assessing the agreement between clinical and CAB risk stratification as low-risk (LR) or high-risk (HR) for distant recurrence.

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Introduction: Indian population is aging and the cancer rates are rising.  Older adults (OAs)(≥60 years) with cancer require specialized care.  However, data on geriatric cancer epidemiology is scarce.

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Ovarian cancer is one of the most familiar kinds of gynecological cancer seen in women. Though it is not as familiar as breast cancer, the survival rate for ovarian cancer is very low when compared with breast cancer. Even after being one among the familiar types, to date, there are no proper treatments available for ovarian cancer.

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Background And Aim: Chronic myeloid leukemia is a myeloproliferative neoplasm associated with the specific chromosomal translocation known as the Philadelphia chromosome. Imatinib is a potent BCR-ABL tyrosine kinase inhibitor, which is approved as the first line therapy for CML patients. There are various population pharmacokinetic studies available in the literature for this population.

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Background: Primary care physicians not only coordinate referrals to oncology services but can play a crucial role in successful fertility preservation referrals in cancer-diagnosed patients. Hence, it is important to assess their knowledge and attitudes towards fertility preservation.

Methods: An eighteen-item oncofertility survey was administered to primary care physicians between May 2019 to September 2020.

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Background: Tamoxifen is useful in managing breast cancer and it is reported to have significant variability in its pharmacokinetics. This review aimed to summarize reported population pharmacokinetics studies of tamoxifen and to identify the factors affecting the pharmacokinetics of tamoxifen in adult breast cancer patients.

Method: A systematic search was undertaken in Scopus, Web of Science, and PubMed for papers published in the English language from inception to 20 August 2022.

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Purpose: Breaking bad news (BBN) is a vital part of oncology practice. We conducted this study to assess an abbreviated PENS protocol [Patient preference, Explanation, Next appointment, and Support] for BBN in oncology outpatient (OP) settings.

Methods: This observational study was conducted in a university teaching hospital, including cancer patients who were unaware of their condition and willing to discuss their disease status.

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Our patient initially presented in 2015 with an ulcerative lesion over the scalp. Fine needle aspiration cytology (FNAC) from a regional enlarged lymph node showed features of metastatic poorly differentiated carcinoma and he underwent wide local excision with functional neck dissection. His next visit was after five years in 2020 with pain in the left hip region.

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Checklist based routine evaluation of surgical skills in any medical school demands quality time and effort from the supervising expert and is highly influenced by assessor bias. Alternatively, automated video based surgical skill assessment is a simple and viable method to analyse surgical dexterity offline without the need for acute presence of an expert surgeon throughout the surgery. In this paper, a novel approach and results for the automated segmentation of microsurgical instruments from the real-world neurosurgical video dataset was presented.

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Background: Cancer patients are more vulnerable to developing drug-drug interactions as multiple medications are administered concomitantly with cytotoxic agents to treat the underlying comorbidities. These drug-drug interactions often receive less medical attention and consequently are associated with adverse clinical outcomes.

Objective: We intended to comprehensively characterize the drug-drug interactions among anticancer drugs and other concomitantly prescribed drugs in hospitalized lung cancer patients.

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Background: The prevalence of hepatocellular carcinoma (HCC) is increasing worldwide and it is now the third most common cause of cancer-related death. HCC is becoming a major health burden with steadily increasing incidence globally.

Methods: This is an observational study over a 3-year period in a tertiary care center in India.

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The advent of molecular profiling has revolutionized the treatment of lung cancer by comprehensively delineating the genomic landscape of the epidermal growth factor receptor (EGFR) gene. Drug resistance caused by EGFR mutations and genetic polymorphisms of drug metabolizing enzymes and transporters impedes effective treatment of EGFR mutant and resistant lung cancer. This review appraises current literature, opportunities, and challenges associated with liquid biopsy and pharmacogenomic (PGx) testing as precision therapy tools in the management of EGFR mutant and resistant lung cancers.

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Purpose: Oncofertility practice continues to grow in developing countries despite the lack of health care services, especially those related to cancer care. The purpose of this study is to further explore oncofertility practice in these countries and identify opportunities for field-wide coalescence.

Methods: We generated a survey to learn more about oncofertility practice in nine developing countries within our Oncofertility Consortium Global Partners Network-Mexico, Colombia, Guatemala, Argentina, Chile, Nigeria, South Africa, Saudi Arabia, and India.

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Genomic profiling of tumors has become the mainstay for diagnosis, treatment monitoring and a guide to precision medicine. However, in clinical practice, the detection of driver mutations in tumors has several procedural limitations owing to progressive disease and tumor heterogeneity. The current era of liquid biopsy promises a better solution.

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Background & Objective: Cytogenetic abnormalities in Multiple myeloma (MM) has emerged as the most important factor that determine the prognosis and survival. Fluorescence in situ hybridization (FISH) can detect a greater number of cytogenetic abnormalities as compared to conventional karyotyping and hence has become the standard test in determining genetic abnormalities in MM. The present study was planned as there is an unmet need to find out various cytogenetic abnormalities and to implement them in prognostic stratification by Revised International Staging System (R-ISS) among Indian population.

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Background The occurrence of adverse drug reactions with chemotherapy among cancer patients is a well-documented phenomenon. However, the understanding of contributoring factors and their influence on the severity of adverse drug reactions is incomplete without the psychosocial factors affecting them. Objective The present study was done to understand if factors like Health literacy and cognition levels have an association with the severity of adverse drug reactions of cancer chemotherapy.

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Recommendations from the American Society of Clinical Oncology (ASCO) emphasize the critical need to understand current trends in fertility preservation (FP) among the two sets of primary health care providers involved in oncofertility: the oncologists and the gynecologists. This study is aimed at understanding the health care providers' knowledge, attitudes, and barriers in oncofertility across India. An 18-item oncofertility survey was designed and directed to 77 oncologists and 214 gynecologists across India.

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Purpose: Oncofertility practice continues to grow in developing countries despite the lack of health care services, especially those related to cancer care. The purpose of this study is to further explore oncofertility practice in these countries and identify opportunities for field-wide coalescence.

Methods: We generated a survey to learn more about oncofertility practice in nine developing countries within our Oncofertility Consortium Global Partners Network-Mexico, Colombia, Guatemala, Argentina, Chile, Nigeria, South Africa, Saudi Arabia, and India.

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Background: The 90-day BCR-ABL1 (breakpoint cluster region-Abelson 1) level has been one of the accepted milestones for predicting the molecular response in patients with chronic myeloid leukemia (CML). The rate of decline in BCR-ABL1 has been considered a better predictor of the response but has not been uniformly accepted. A paucity of evidence is available to predict the accuracy of the rate of decline in the Indian context.

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Background: Insomnia and poor sleep quality are common problems in patients with cancer. It interferes with the coping ability, symptoms, and treatment outcomes. The Pittsburgh Sleep Quality Index (PSQI) is a reliable, valid instrument to assess the quality of sleep in patients with cancer.

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Purpose: Escalated BEACOPP (bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine, and prednisone) improves overall survival (OS) in patients with Hodgkin lymphoma (HL) relative to ABVD (doxorubicin, bleomycin, vinblastine, and dacarbazine) therapy. However, the associated higher cost and toxicity discourage clinicians from prescribing it. Identifying high-risk patients and administering escalated BEACOPP remains an effective strategy.

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Introduction: Hodgkin's lymphoma (HL) is one of the most curable malignancies with cure rates of above 85% across all stages. Bleomycin containing regimen is routinely employed in the treatment of HL. Pulmonary toxicity due to this drug is the most feared side effect in these regimens where the mortality rate is approximately 2%-3%.

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