Publications by authors named "Sukhmani K Padda"

Article Synopsis
  • A study investigated the safety and efficacy of combining regorafenib and low-dose methotrexate for patients with advanced -mutant NSCLC, as there are limited treatment options available beyond G12C inhibitors.
  • The study included 18 patients, revealing a median progression-free survival of 3.7 months and a median overall survival of 10.4 months, with a 16.7% objective response rate.
  • The treatment caused notable toxicity, leading to dose adjustments and discontinuations; consequently, the study did not meet its primary goal of improving progression-free survival.
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Background: Prior research in non-small cell lung cancer (NSCLC) has shown that tumors with specific driver mutations may be less likely to respond to immune checkpoint inhibitors (ICI). In this analysis, we evaluated the characteristics of patients with durable clinical benefit (DCB) to ICI compared to those with no durable clinical benefit (NDB), with emphasis on the role of molecular alterations in EGFR, ALK, and ROS1 and pretreatment neutrophil-to-lymphocyte ratio (NLR).

Methods: We retrospectively collected clinical characteristics and outcomes for patients who initiated ICI monotherapy for advanced NSCLC at Stanford University between April 2015 and May 2018.

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Objectives: Limited data are available on central nervous system (CNS) efficacy with standard-of-care therapies for KRAS-mutated (KRASmut) advanced non-small cell lung cancer (NSCLC). The objective of this study was to investigate the incidence and progression of brain metastases in KRASmut advanced NSCLC treated with docetaxel using pooled data from historical clinical trials.

Materials And Methods: Data from phase 2/3 trials of docetaxel-containing regimens in advanced NSCLC were sourced from the Medidata platform.

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Importance: Tumor boards are integral to the care of patients with cancer. However, data investigating the burden of tumor boards on physicians are limited.

Objective: To investigate what physician-related and tumor board-related factors are associated with higher tumor board burden among oncology physicians.

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Article Synopsis
  • * Out of 279 patients analyzed, only 14% received proactive surveillance MRIs, and the two-year incidence of BrMs was found to be 17%, with adenocarcinoma patients experiencing higher rates than those with squamous cell carcinoma.
  • * Treatment trends showed that most BrMs patients (over 78%) were treated with stereotactic radiosurgery (SRS), indicating a preference for this approach over whole-brain radiation therapy (WBRT).
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Purpose: A left anterior descending (LAD) coronary artery volume (V) receiving 15 Gy (V15 Gy) ≥10% has been recently observed to be an independent risk factor of major adverse cardiac events and all-cause mortality in patients with locally advanced non-small cell lung cancer treated with radiation therapy. However, this dose constraint has not been validated in independent or prospective data sets.

Methods And Materials: The NRG Oncology/Radiation Therapy Oncology Group (RTOG) 0617 data set from the National Clinical Trials Network was used.

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Introduction: Increasing evidence suggests that consolidation durvalumab confers limited benefits for patients with stage III EGFR-mutated NSCLC. Induction or maintenance EGFR tyrosine kinase inhibitors (TKIs) added to concurrent chemoradiotherapy (CRT) may optimize definitive treatment, but there are limited data supporting an induction TKI strategy.

Methods: We evaluated the efficacy and safety of induction EGFR TKIs administered before concurrent CRT in a retrospective series of patients with unresectable locally advanced EGFR-mutated NSCLC.

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High-grade (grade 3) neuroendocrine neoplasms (G3 NENs) have poor survival outcomes. From a clinical standpoint, G3 NENs are usually grouped regardless of primary site and treated similarly. Little is known regarding the underlying genomics of these rare tumors, especially when compared across different primary sites.

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Introduction: Paraneoplastic autoimmune diseases (ADs) are a hallmark of thymic epithelial tumors (TETs) and affect treatment management in patients with advanced-stage tumors, yet the risk factors for development of AD in advanced TET remain poorly understood.

Methods: All patients with advanced TET treated at Stanford University between 2006 and 2020 were included. Charts were retrospectively reviewed for the presence of AD, demographic information, and treatment history.

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Purpose Of Review: Lung neuroendocrine tumors (NETs)-typical carcinoids and atypical carcinoids-have unique molecular alterations that are distinct from neuroendocrine carcinomas of the lung and non-small cell lung cancers. Here, we review the role of molecular profiling in the prognosis and treatment of lung NETs.

Recent Findings: There have been no recently identified molecular prognostic factors for lung NETs and none that have been routinely used to guide management of patients with lung NETs.

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Article Synopsis
  • This study investigates how different molecular subgroups of non-small-cell lung cancer (NSCLC), identified through tumor genomic data, may respond differently to PD-(L)1 immunotherapy using computational biological modeling (CBM).
  • Researchers analyzed data from 776 NSCLC patients, identifying eight molecular subgroups and evaluating their sensitivity to PD-(L)1 immunotherapy based on various genomic and immunological markers.
  • The findings indicate that CBM can predict immunotherapy responses and provide insights into the underlying mechanisms, with a strong correlation found between modeled survival data and actual patient outcomes in a small clinical cohort.
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Purpose: To provide evidence-based recommendations to practicing clinicians on management of patients with stage III non-small-cell lung cancer (NSCLC).

Methods: An Expert Panel of medical oncology, thoracic surgery, radiation oncology, pulmonary oncology, community oncology, research methodology, and advocacy experts was convened to conduct a literature search, which included systematic reviews, meta-analyses, and randomized controlled trials published from 1990 through 2021. Outcomes of interest included survival, disease-free or recurrence-free survival, and quality of life.

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Introduction: After the development of acquired resistance to osimertinib, the standard-of-care treatment for advanced EGFR-mutated NSCLC is chemotherapy. Whether afatinib, a pan-ErbB family tyrosine kinase inhibitor, is active after progression on osimertinib is unknown.

Methods: We conducted a single-institution retrospective analysis of patients with advanced EGFR-mutated NSCLC who received afatinib-containing therapy after progression on osimertinib.

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Introduction: Patients with EGFR-mutant lung cancer who have had disease progression on osimertinib commonly receive platinum doublet chemotherapy, but whether adding immunotherapy or bevacizumab provides additional benefit is unknown.

Materials And Methods: This was a retrospective analysis at 2 university-affiliated institutions. Patients with EGFR-mutant lung cancer who had progression on osimertinib and received next-line therapy with platinum doublet chemotherapy (chemo), platinum doublet chemotherapy plus immunotherapy (chemo-IO), or platinum doublet chemotherapy plus bevacizumab (chemo-bev), were identified; patients who continued osimertinib with these regimens were included.

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Background: In most studies, patients with EGFR L858R mutant non-small cell lung cancer (NSCLC) have a shorter duration of response to EGFR tyrosine kinase inhibitor (TKI) therapy than do patients with EGFR exon 19 deletion NSCLC. The role that co-mutations play in this observation is unknown.

Methods: We performed a single-institution retrospective analysis of patients with EGFR-mutant NSCLC (exon 19 deletion or L858R mutation) who received frontline EGFR TKI for metastatic disease between 2014 and 2019, and who had STAMP next-generation sequencing (NGS), a 130-gene platform.

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Article Synopsis
  • A study explored the combination of momelotinib, a JAK1/2 and TBK1 inhibitor, with erlotinib in patients with EGFR-mutated non-small cell lung cancer (NSCLC) to see if it could overcome resistance to EGFR TKIs.* -
  • The trial included 11 patients, determining the maximum tolerated dose of momelotinib as 200 mg daily, with adverse effects mainly being mild to moderate.* -
  • The overall response rate was 54.5% with a median progression-free survival of 9.2 months, but momelotinib did not provide added benefits compared to erlotinib alone.*
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Second-line treatment options for patients with relapsed, extensive-stage small cell lung cancer (ES-SCLC) are limited, and even with currently available treatments, prognosis remains poor. Until recently, topotecan (a topoisomerase I inhibitor) was the only drug approved by the United States (US) Food and Drug Administration (FDA) for the management of ES-SCLC following progression after first-line treatment with etoposide plus a platinum derivative (EP; carboplatin preferred). With the most recent approval of EP plus a programmed death ligand 1 (PD-L1) inhibitor, there are now more therapeutic options for managing ES-SCLC.

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Background: Patient reported outcomes (PROs) have been associated with improved symptom management and quality of life in patients with cancer. However, the implementation of PROs in an academic clinical practice has not been thoroughly described. Here we report on the execution, feasibility and healthcare utilization outcomes of an electronic PRO (ePRO) application for cancer patients at an academic medical center.

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Article Synopsis
  • Targeted therapies for driver-mutated metastatic non-small cell lung cancer (NSCLC) have improved treatment outcomes, but they come with cardiovascular risks such as heart failure and arrhythmias.
  • A study analyzed data from the WHO pharmacovigilance database to compare the incidence of cardiovascular adverse events among various targeted therapy drugs, including EGFR, BRAF, MEK, and ALK/ROS1 inhibitors.
  • Results indicated that ALK/ROS1 inhibitors have higher risks of conduction disease and QT prolongation, while osimertinib showed strong associations with multiple heart-related issues, highlighting the need for careful monitoring during treatment.
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Introduction: In classical EGFR mutant non-small-cell lung cancer (NSCLC), EGFR tyrosine kinase inhibitor (TKI) therapy yields better outcomes than platinum-based chemotherapy. However, EGFR exon 20 insertion (ex20ins) NSCLC is relatively resistant to currently available EGFR TKIs. Though platinum-based chemotherapy is the frontline standard of care for EGFR ex20ins NSCLC, its efficacy is not fully described.

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Further characterization of thymic epithelial tumors (TETs) is needed. Genomic information from 102 evaluable TETs from The Cancer Genome Atlas (TCGA) dataset and from the IU-TAB-1 cell line (type AB thymoma) underwent clustering analysis to identify molecular subtypes of TETs. Six novel molecular subtypes (TH1-TH6) of TETs from the TCGA were identified, and there was no association with WHO histologic subtype.

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To identify disease-relevant T cell receptors (TCRs) with shared antigen specificity, we analyzed 778,938 TCRβ chain sequences from 178 non-small cell lung cancer patients using the GLIPH2 (grouping of lymphocyte interactions with paratope hotspots 2) algorithm. We identified over 66,000 shared specificity groups, of which 435 were clonally expanded and enriched in tumors compared to adjacent lung. The antigenic epitopes of one such tumor-enriched specificity group were identified using a yeast peptide-HLA A02:01 display library.

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