Publications by authors named "Zhaohui Arter"

Background: Combination therapy using an immune checkpoint inhibitor (ICI) and a tyrosine kinase inhibitor (TKI) is the standard first-line treatment for metastatic renal cell carcinoma (RCC). Oral TKIs enhance patient autonomy but require strict adherence and persistence.

Methods: We analyzed adults with metastatic RCC at Chao Comprehensive Cancer Center, receiving at least 2 TKI prescriptions between April 29, 2019, and August 29, 2022, assessing adherence via Medication Possession Ratio (MPR) and Proportion of Days Covered (PDC).

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The current standard of care for unresectable stage III non-small cell lung cancer (NSCLC) involves a concurrent platinum-based doublet chemotherapy and chest radiotherapy, followed by consolidative therapy with durvalumab, an anti-programmed death ligand 1 (PD-L1) antibody, based on the PACIFIC trial (NCT02125461). However, the utility of durvalumab in -mutated lung cancer patients is questionable based on post-hoc analysis and multi-institutional retrospective analysis. Osimertinib is a third-generation -tyrosine kinase inhibitor (TKI) with proven clinical efficacy in NSCLC.

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Background: mutations are generally divided into three classes based on the different altered mechanism of activation.

Methods: We queried the public AACR GENIE database (version 13.1), which includes tumor mutation burden (TMB) data, to explore potential molecular differences among the three classes of non-small cell lung cancer (NSCLC).

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Background: Receptor tyrosine kinase (RTK) inhibitors have been approved for the treatment of NTRK fusion (NTRK+) and RET fusion (RET+) positive solid tumors in a tumor-agnostic manner. However, the objective response rate was the lowest among entrectinib-treated NTRK+ colorectal cancer (CRC) (20%) and selpercatinib-treated RET+ CRC (20%) among all NTRK+, and RET+ solid tumors, respectively.

Methods: We compared tumor mutation burden (TMB) in NTRK+/RET+ CRC with all other NTRK+ and RET+ solid tumors using the American Association for Cancer Research (AACR) GENIE database (Version 13.

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Article Synopsis
  • - Drug resistance in EGFR-mutant non-small cell lung cancer (NSCLC) is complicated by mechanisms like pathway reactivation and fusion of receptor tyrosine kinases (RTKs), leading to challenges in treatment with tyrosine kinase inhibitors (TKIs).
  • - A study involving multiple institutions analyzed 27 patients with RTK fusions identified through genetic testing, focusing on their response to dual TKI therapy, with results showing a 24% objective response rate and an 80% disease control rate overall.
  • - The majority of patients had ALK or RET fusions, and those who received dual TKI treatment had a slightly lower response rate (21.4%) but no new side effects were reported, suggesting this approach
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Kirsten rat sarcoma viral oncogene homolog -mutant non-small cell lung carcinoma (NSCLC) accounts for approximately 10-13% of advanced nonsquamous NSCLC cases in Western populations, presenting a significant therapeutic challenge owing to the difficulty of directly targeting KRAS. Adagrasib, an oral small-molecule covalent inhibitor, irreversibly and selectively targets KRAS in its inactive state. It received accelerated Food and Drug Administration (FDA) approval on December 12, 2022, following the KRYSTAL-1 Phase II trial.

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Purpose: Nuclear protein in testis carcinoma (NC) is an underdiagnosed and aggressive squamous/poorly differentiated cancer characterized by rearrangement of the gene on chromosome 15q14. Co-occurring alternations have not been fully characterized.

Methods: We analyzed the genomic and immune landscape of 54 cases of NC that underwent DNA- and RNA-based NGS sequencing (Caris).

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Article Synopsis
  • * Immunotherapy, like adjuvant atezolizumab and neoadjuvant nivolumab with chemotherapy, has shown significant benefits in improving major pathologic responses and event-free survival for surgical patients.
  • * The landscape of NSCLC treatment is evolving with regulatory approvals for targeted therapies (like osimertinib and alectinib) and ongoing research into novel combinations and predictive tools to optimize perioperative care.
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On April 18, 2024, the Food and Drug Administration approved alectinib as an adjuvant treatment for patients with anaplastic lymphoma kinase ()-positive non-small cell lung cancer (NSCLC) after tumor resection. This approval was grounded in the outcomes of the ALINA trial, which demonstrated that alectinib significantly enhances disease-free survival compared to traditional platinum-based chemotherapy in the adjuvant setting. The ALINA trial is notable not just for advancing ALK tyrosine kinase inhibitors (TKIs) into the adjuvant setting but also for its innovative approach of comparing them to adjuvant chemotherapy, distinguishing it from other landmark trials.

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On December 22, 2023, the US Food and Drug Administration (FDA) approved the biologics license application for patritumab deruxtecan (HER3-DXd) for priority review. This treatment is aimed at adult patients with locally advanced or metastatic NSCLC with EGFR mutations, who have received at least two prior systemic therapies. Approval of patritumab deruxtecan would mark it as the first HER3 targeted therapy in the United States.

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The role of eculizumab in treating Shiga-toxin-producing (STEC) hemolytic uremic syndrome (HUS) patients with neurological involvement remains unclear. We describe two distinctly different STEC-HUS patients with neurologic involvement successfully managed with eculizumab, and perform a literature review of all published cases. Both patients had complete resolution of neurological symptoms after initiation of eculizumab.

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Targeted therapies, such as epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs), have revolutionized the treatment landscape for EGFR-mutant non-small cell lung cancer (NSCLC). However, the emergence of resistance to EGFR TKIs especially the third generation TKIs such as osimertinib remains a major clinical challenge. As a broader strategy for combating resistance, several clinical trials have explored the efficacy of immune checkpoint inhibitors (ICIs)+chemotherapy in EGFR-mutated NSCLC.

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Primary pancreatic malignancies are mostly composed of the adenocarcinoma histological subtype. However, squamous cell carcinoma (SCC) accounts for approximately 0.5%-1% of all malignant pancreatic cancers.

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Introduction: Nirmatrelvir/ritonavir (NIM/r) inhibits tacrolimus metabolism resulting in a profound drug-drug interaction that is further complicated by the use of azole antifungals.

Case Presentations: We describe three strategies, in 4 patient cases, for the initiation of NIM/r in allogeneic hematopoietic stem cell transplant (alloHSCT) recipients on tacrolimus at the time of diagnosis. Patients 1 and 2 (strategy 1) experienced prolonged, elevated tacrolimus concentrations after an empiric 33% reduction in tacrolimus dose and adjustment of azole antifungal at NIM/r initiation (strategy 1) and with complete discontinuation of tacrolimus and azole antifungal at NIM/r initiation (strategy 2).

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Background: Previous studies in the general population observed that compared with non-Hispanic White women, Pacific Islander and Black women have higher age-adjusted mortality rates from epithelial ovarian cancer (EOC), while Asian American patients have lower mortality. We investigated whether race and ethnicity is associated with differences in EOC survival in a United States Military population where patients have equal access to healthcare.

Methods: This retrospective study included women diagnosed with EOC between 2001 and 2018 among Department of Defense beneficiaries.

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Purpose: There are racial and ethnic differences in endometrial cancer incidence and mortality rates; compared with Non-Hispanic White women, Black women have a similar incidence rate for endometrial cancer, but their mortality is higher. Pacific Islander women may also have worse outcomes compared to their White counterparts. We assessed tumor characteristics and adjuvant therapy by racial and ethnic group among endometrial cancer patients treated within the Military Health System, an equal access healthcare organization.

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BACKGROUND Microsatellite instability (MSI) is a hallmark of specific cancers and can be diagnosed using both tissue- and liquid-based approaches. When these tissue- and liquid-based approaches give differing results, they are known as discordant or being at variance. MSI-H tumors are well-researched candidates for treatment with programmed cell death protein 1 (PD-1) inhibitor-based immunotherapy, but the efficacy of immunotherapy in MSI-H discordant endometrial cancer, especially as first-line therapy, is not yet well documented in the literature.

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KRAS is one of the most common oncogenes in non-small cell lung cancer (NSCLC) and is associated with a poor prognosis. Historically, KRAS mutations have been difficult to target due to lack of binding sites and exceptionally high affinity for guanosine triphosphate/guanosine diphosphate (GTP/GDP). Recently, KRAS selective inhibitors have shown promising results in Phase I/II studies.

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Both Hodgkin's lymphoma and testicular cancers can present in young men; however, concurrent Hodgkin's lymphoma with seminoma is very rare. When they do coexist, careful consideration must be made to avoid missing new cancer by assuming the presence of primary metastatic disease when lymphadenopathy presents. Here we present a rare case of coexistence of seminoma and Hodgkin's lymphoma and the staging and treatment challenges associated with a 2-cancer diagnosis.

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