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"Gupta, Sudeep"
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Neoadjuvant chemotherapy followed by surgery in cervical cancer: past, present and future
by
Miriyala, Raviteja
,
Mahantshetty, Umesh
,
Maheshwari, Amita
in
Antineoplastic Combined Chemotherapy Protocols - therapeutic use
,
Cancer therapies
,
Cervical cancer
2022
BackgroundCisplatin-based concurrent chemoradiation is the standard treatment for locally advanced cervical cancer. In view of the difficulties associated with implementation of standard radiation protocols in low- and middle-income countries and the associated toxicities of chemoradiation, neoadjuvant chemotherapy followed by surgery has been tried as an alternative treatment for locally advanced cervical cancer.MethodsA comprehensive review was undertaken of the existing literature, caveats and potential avenues of neoadjuvant chemotherapy followed by surgery compared with chemoradiation in locally advanced cervical cancer.ResultsRandomized studies conducted in the pre-chemoradiation era comparing neoadjuvant chemotherapy followed by surgery with definitive radiotherapy alone showed favorable outcomes with the chemo-surgical approach. However, contemporary studies evaluating the role of neoadjuvant chemotherapy followed by surgery have failed to establish this approach as the standard. About 25–30% of patients who undergo neoadjuvant chemotherapy remain inoperable and require definitive chemoradiation. A similar proportion of patients would require adjuvant (chemo)radiation after neoadjuvant chemotherapy followed by surgery, resulting in excessive morbidity. Evaluation of time trends across the past few decades reveals that the advancements in delivery of radiation (external beam and brachytherapy) have translated into improvement in outcomes for locally advanced cervical cancer, while a similar trend was not observed for surgery or chemotherapy.ConclusionNeoadjuvant chemotherapy followed by surgery cannot be considered a standard of care in patients with locally advanced cervical cancer. This approach needs further clinical research to generate robust high-quality evidence especially for the sub-sets that might potentially benefit in terms of survival, toxicity and quality of life, against the gold standard treatment of concomitant chemoradiation.
Journal Article
Locoregional treatment versus no treatment of the primary tumour in metastatic breast cancer: an open-label randomised controlled trial
by
Badwe, Rajendra
,
Budrukkar, Ashwini
,
Nair, Nita
in
Aged
,
Antineoplastic Agents, Hormonal - adverse effects
,
Antineoplastic Agents, Hormonal - therapeutic use
2015
The role of locoregional treatment in women with metastatic breast cancer at first presentation is unclear. Preclinical evidence suggests that such treatment might help the growth of metastatic disease, whereas many retrospective analyses in clinical cohorts have suggested a favourable effect of locoregional treatment in these patients. We aimed to compare the effect of locoregional treatment with no treatment on outcome in women with metastatic breast cancer at initial presentation.
In this open-label, randomised controlled trial, we recruited previously untreated patients (≤65 years of age with an estimated remaining life expectancy of at least 1 year) presenting with de-novo metastatic breast cancer from Tata Memorial Centre, Mumbai, India. Patients were randomly assigned (1:1) to receive locoregional treatment directed at their primary breast tumour and axillary lymph nodes, or no locoregional treatment, by a computer-generated block randomisation sequence (block size of four). Randomisation was stratified by site of distant metastases, number of metastatic lesions, and hormone receptor status. Patients with resectable primary tumour in the breast that could be treated with endocrine therapy were randomly assigned upfront, whereas those with an unresectable primary tumour were planned for chemotherapy before randomisation. Of the patients who had chemotherapy before randomisation, we randomly assigned patients who had an objective tumour response after six to eight cycles of chemotherapy. The primary endpoint was overall survival analysed by intention to treat. This study is registered with ClinicalTrials.gov, NCT00193778.
Between Feb 7, 2005, and Jan 18, 2013, of the 716 women presenting with de-novo metastatic breast cancer, we randomly assigned 350 patients: 173 to locoregional treatment and 177 to no locoregional treatment. At data cut-off of Nov 1, 2013, median follow-up was 23 months (IQR 12·2–38·7) with 235 deaths (locoregional treatment n=118, no locoregional treatment n=117). Median overall survival was 19·2 months (95% CI 15·98–22·46) in the locoregional treatment group and 20·5 months (16·96–23·98) in the no-locoregional treatment group (HR 1·04, 95% CI 0·81–1·34; p=0·79), and the corresponding 2-year overall survival was 41·9% (95% CI 33·9–49·7) in the locoregional treatment group and 43·0% (35·2–50·8) in the no locoregional treatment group. The only adverse event noted was wound infection related to surgery in one patient in the locoregional treatment group.
There is no evidence to suggest that locoregional treatment of the primary tumour affects overall survival in patients with metastatic breast cancer at initial presentation who have responded to front-line chemotherapy, and this procedure should not be part of routine practice.
Department of Atomic Energy, Government of India.
Journal Article
Maintenance therapy for recurrent epithelial ovarian cancer: current therapies and future perspectives – a review
by
Nag, Shona
,
Rauthan, Amit
,
Aggarwal, Shyam
in
Animals
,
Antineoplastic agents
,
Antineoplastic Combined Chemotherapy Protocols - adverse effects
2019
Epithelial ovarian cancer (EOC) is usually diagnosed late at an advanced stage. Though EOC initially responds to treatment, the recurrence rate is pretty high. The efficacy of different targeted therapies reduces with each recurrence. Hence there is need of effective maintenance therapy in recurrent EOC. Recently, polyADP-ribose polymerase (PARP) inhibitors (PARPi) have been approved both for initial treatment of EOC and as its maintenance treatment. PARPi have also been found to act regardless of
BRCA
status or homologous recombination (HR) deficiency. Several trials testing PARPi early in maintenance therapy are in progress and their results will shed light on the optimal timing of maintenance therapy that gives the most benefit with least toxicity. Right patient selection for maintenance treatment is also a challenge. Hence, though PARPi are emerging as a promising maintenance treatment in recurrent EOC with prolongation of progression free survival (PFS), results from further trials and overall survival (OS) data from current trials are awaited to fulfill the gaps in understanding the role of this pathway in treatment of EOC. This review discusses the current therapies for EOC, challenges in the treatment of recurrent EOC, recent developments and trials in recurrent EOC maintenance with special focus on PARPi and future perspectives.
Journal Article
Elective versus Therapeutic Neck Dissection in Node-Negative Oral Cancer
2015
Patients with early-stage, node-negative oral cancer who had elective lymph-node dissection at the time of resection of the primary tumor had better overall survival than those who waited for node resection until clinical recurrence.
The treatment of patients with early-stage, clinically node-negative oral squamous-cell cancer has been a contentious issue spanning five decades. Such patients are usually treated with oral surgical excision of the primary tumor. Surgical options for addressing the neck include elective neck dissection at the time of the excision of the primary tumor or watchful waiting with therapeutic neck dissection for nodal relapse. Proponents of elective neck dissection cite decreased relapse rates and better survival rates.
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However, others consider the evidence not to be definitive.
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Data from prospective trials have also produced conflicting evidence.
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The watchful-waiting approach has . . .
Journal Article
Overall Survival Prediction in Glioblastoma With Radiomic Features Using Machine Learning
2020
Glioblastoma multiforme (GBM) are aggressive brain tumors, which lead to poor Overall Survival (OS) of patients. For precise surgical and treatment planning OS prediction of GBM patients is highly desired by the clinicians and oncologists. Radiomics research attempts at predicting disease prognosis, thus providing beneficial information for personalized treatment from a variety of imaging features extracted from multiple MR images. In this study, first order intensity based, volume and shape based and textural radiomic features are extracted from FLAIR and T1ce MRI data. The region of interest (ROI) is further decomposed with Stationary Wavelet Transform (SWT) with low pass and high pass filtering. This helped in acquiring the directional information. The efficiency of the proposed algorithm is evaluated on Brain Tumor Segmentation (BraTS) challenge training, testing and validation dataset. The proposed approach secured third position in BraTS 2018 challenge for Overall Survival prediction task.
Journal Article
Health-related quality of life and its determinants among cancer patients: evidence from 12,148 patients of Indian database
by
Mehra, Nikita
,
Roy, Partha
,
Krishnamurthy, Manjunath Nookala
in
Beliefs, opinions and attitudes
,
Bone cancer
,
Cancer
2024
Background
Cancer survivors experience a decrement in health-related quality of life (HRQoL) resulting from the disease as well as adverse effects of therapy. We evaluated the HRQoL of cancer patients, stratified by primary cancer site, stage, treatment response and associated adverse events, along with its determinants.
Methods
Data were collected from 12,148 patients, sampled from seven purposively chosen leading cancer hospitals in India, to elicit HRQoL using the EuroQol questionnaire comprising of 5-dimensions and 5-levels (EQ-5D-5L). Multiple linear regression was used to determine the association between HRQoL and various socio-demographic as well as clinical characteristics.
Results
Majority outpatients (78.4%) and inpatients (81.2%) had solid cancers. The disease was found to be more prevalent among outpatients (37.5%) and inpatients (40.5%) aged 45–60 years and females (49.3–58.3%). Most patients were found to be in stage III (40–40.6%) or stage IV (29.4–37.3%) at the time of recruitment. The mean EQ-5D-5 L utility score was significantly higher among outpatients [0.630 (95% CI: 0.623, 0.637)] as compared to inpatients [0.553 (95% CI: 0.539, 0.567)]. The HRQoL decreased with advancing cancer stage among both inpatients and outpatients, respectively [stage IV: (0.516 & 0.557); stage III (0.609 & 0.689); stage II (0.677 & 0.713); stage I (0.638 & 0.748),
p
value < 0.001]. The outpatients on hormone therapy (B = 0.076) showed significantly better HRQoL in comparison to patients on chemotherapy. However, palliative care (B=-0.137) and surgery (B=-0.110) were found to be associated with significantly with poorer HRQoL paralleled to chemotherapy. The utility scores among outpatients ranged from 0.305 (bone cancer) to 0.782 (Leukemia). Among hospitalized cases, the utility score was lowest for multiple myeloma (0.255) and highest for testicular cancer (0.771).
Conclusion
Older age, lower educational status, chemotherapy, palliative care and surgery, advanced cancer stage and progressive disease were associated with poor HRQoL. Our study findings will be useful in optimising patient care, formulating individualized treatment plan, improving compliance and follow-up.
Journal Article
A Novel Approach for Fully Automatic Intra-Tumor Segmentation With 3D U-Net Architecture for Gliomas
2020
Gliomas are the most common primary brain malignancies, with varying degrees of aggressiveness and prognosis. Understanding of tumor biology and intra-tumor heterogeneity is necessary for planning personalized therapy and predicting response to therapy. Accurate tumoral and intra-tumoral segmentation on MRI is the first step toward understanding the tumor biology through computational methods. The purpose of this study was to design a segmentation algorithm and evaluate its performance on pre-treatment brain MRIs obtained from patients with gliomas.
In this study, we have designed a novel 3D U-Net architecture that segments various radiologically identifiable sub-regions like edema, enhancing tumor, and necrosis. Weighted patch extraction scheme from the tumor border regions is proposed to address the problem of class imbalance between tumor and non-tumorous patches. The architecture consists of a contracting path to capture context and the symmetric expanding path that enables precise localization. The Deep Convolutional Neural Network (DCNN) based architecture is trained on 285 patients, validated on 66 patients and tested on 191 patients with Glioma from Brain Tumor Segmentation (BraTS) 2018 challenge dataset. Three dimensional patches are extracted from multi-channel BraTS training dataset to train 3D U-Net architecture. The efficacy of the proposed approach is also tested on an independent dataset of 40 patients with High Grade Glioma from our tertiary cancer center. Segmentation results are assessed in terms of Dice Score, Sensitivity, Specificity, and Hausdorff 95 distance (ITCN intra-tumoral classification network).
Our proposed architecture achieved Dice scores of 0.88, 0.83, and 0.75 for the whole tumor, tumor core and enhancing tumor, respectively, on BraTS validation dataset and 0.85, 0.77, 0.67 on test dataset. The results were similar on the independent patients' dataset from our hospital, achieving Dice scores of 0.92, 0.90, and 0.81 for the whole tumor, tumor core and enhancing tumor, respectively.
The results of this study show the potential of patch-based 3D U-Net for the accurate intra-tumor segmentation. From experiments, it is observed that the weighted patch-based segmentation approach gives comparable performance with the pixel-based approach when there is a thin boundary between tumor subparts.
Journal Article
Global disparities in access to cancer care
by
Gupta, Sudeep
,
Shulman, Lawrence N.
,
dos-Santos-Silva, Isabel
in
Medicine
,
Medicine & Public Health
,
Viewpoint
2022
Despite the significant advances made in our understanding of cancer and how to treat it over the last hundred years, there are wide global disparities in access to cancer care and in who gets to benefit from cutting-edge cancer research.
Journal Article
Low-dose versus standard-dose olanzapine with triple antiemetic therapy for prevention of highly emetogenic chemotherapy-induced nausea and vomiting in patients with solid tumours: a single-centre, open-label, non-inferiority, randomised, controlled, phase 3 trial
by
Noronha, Vanita
,
Srinivas, Sujay
,
Gulia, Seema
in
Antiemetics
,
Antiemetics - adverse effects
,
Antineoplastic Agents - therapeutic use
2024
Olanzapine is an effective antiemetic agent but it results in substantial daytime somnolence when administered at the standard dose. Our aim was to compare the efficacy of low-dose versus standard-dose olanzapine after highly emetogenic chemotherapy in patients with solid tumours.
This was a single-centre, open-label, non-inferiority, randomised, controlled, phase 3 trial done in a tertiary care referral centre in India (Tata Memorial Centre, Homi Bhabha National Institute, Mumbai). Patients aged 13–75 years with an Eastern Cooperative Oncology Group performance status of 0–2, who were receiving doxorubicin–cyclophosphamide or high-dose cisplatin for a solid tumour were eligible. Patients were randomly assigned (1:1), with block randomisation (block sizes of 2 or 4) and stratified by sex, age (≥55 or <55 years), and chemotherapy regimen, to receive low-dose (2·5 mg) oral olanzapine or standard-dose (10·0 mg) oral olanzapine daily for 4 days, in combination with a triple antiemetic regimen. Study staff were masked to treatment allocation but patients were aware of their group assignment. The primary endpoint was complete control, defined as no emetic episodes, no rescue medications, and no or mild nausea in the overall phase (0–120 hours), assessed in the modified intention-to-treat (mITT) population (ie, all eligible patients who received protocol-specified treatment, excluding those who had eligibility violations and who withdrew consent after randomisation). Daytime somnolence was the safety endpoint of interest. Non-inferiority was shown if the upper limit of the one-sided 95% CI for the difference in the complete control proportions between the treatment groups excluded the non-inferiority margin of 10%. This study is registered with the Clinical Trial Registry India, CTRI/2021/01/030233, is closed to accrual, and this is the final data analysis.
Between Feb 9, 2021, and May 30, 2023, 356 patients were pre-screened for eligibility, of whom 275 patients were enrolled and randomly assigned (134 to the 2·5 mg olanzapine group and 141 to the 10·0 mg olanzapine group). 267 patients (132 in the 2·5 mg group and 135 in the 10·0 mg group) were included in the mITT population, of whom 252 (94%) were female, 15 (6%) were male, and 242 (91%) had breast cancer. 59 (45%) of 132 patients in the 2·5 mg olanzapine group had complete control in the overall phase versus 59 (44%) of 135 in the 10·0 mg olanzapine group (difference –1·0% [one-sided 95% CI –100·0 to 9·0]; p=0·87). In the overall phase, there were significantly fewer patients in the 2·5 mg olanzapine group than in the 10·0 mg olanzapine group with daytime somnolence of any grade (86 [65%] of 132 vs 121 [90%] of 135; p<0·0001) and of severe grade on day 1 (six]5%] vs 54 [40%]; p<0·0001).
Our findings suggest that olanzapine 2·5 mg is non-inferior to 10·0 mg in antiemetic efficacy and results in reduced occurrence of daytime somnolence among patients receiving highly emetic chemotherapy and should be considered as a new standard of care.
Progressive Ladies Welfare Association.
Journal Article
Efficacy and safety of palbociclib and ribociclib in patients with estrogen and/or progesterone receptor positive, HER2 receptor negative metastatic breast cancer in routine clinical practice
by
Nandhana, Ravindra
,
Elamarthi, Prahalad
,
Kembhavi, Yogesh
in
Aromatase
,
Bhabha, Homi K
,
Biology and Life Sciences
2021
There is scant data from India on efficacy and safety of palbociclib and ribociclib in routine clinical practice. This retrospective, observational, single institution study included patients with estrogen and/or progesterone receptor positive and human epidermal growth factor receptor 2 (HER2) negative metastatic breast cancers, who received palbociclib or ribociclib with any partner endocrine therapy in any line of treatment between January 2016 and June 2019. Data were analyzed for progression-free survival (PFS), overall survival (OS) and toxicity. The study included 101 female patients with median age of 57 (IQR 48-62) years, of whom 80 (79.2%) were postmenopausal, 79 (78.2%) received palbociclib or ribociclib in second- or later-line treatment, 59 (58.4%) received fulvestrant and 41 (40.6%) received an aromatase inhibitor. In first-line treatment, at a median follow-up of 21.7 (0.5-41.9) months, median PFS and OS were 21.1 (95%CI 16.36-not estimable) months and not reached, respectively. In second- or later-line setting, at a median follow-up of 17.2 (0.5-43.7) months, median PFS and OS were 5.98 (95%CI 4.96-7.89) months and 20.2 (95%CI 14.1-not estimable) months, respectively. Grade 3-4 neutropenia and febrile neutropenia were seen in 45 (45.0%) and 9 (9.0%) patients, respectively while dose reduction was required in 32 (31.7%) patients. In multivariable Cox regression analysis, first-line setting (HR 0.49, 95%CI 0.25-0.97, p = 0.043) and ECOG performance status 1 (HR 0.43, 95%CI 0.20-0.91, p = 0.028) were significantly associated with PFS while only ECOG PS 1 was significantly associated (HR 0.04, 95%CI 0.008-0.206, p = 0.000) with OS. Palbociclib and ribociclib, when used in routine clinical practice in first or subsequent lines of treatment, resulted in efficacy and toxicity outcomes in concordance with those expected from pivotal trials.
Journal Article