Publications by authors named "Yao-Shan Fan"

Background: Radium-223 dichloride (Ra-223) prolongs overall survival (OS) in metastatic castration-resistant prostate cancer (mCRPC) with symptomatic bone metastases. However, there is considerable variation in outcomes among individuals. We aimed to evaluate the prognostic determinants associated with patient survival following National Health Insurance (NHI) reimbursement for Ra-223 therapy in Taiwan.

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Background: Soy sauce is widely used in a variety of Asian dishes to enhance flavor. Soybean and most soybean products, including soy sauces, are listed as prohibited foods in a low iodine diet. However, the iodine content in soy sauces is largely unknown.

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Sarcopenia has serious clinical consequences and poses a major threat to older people. Gastrointestinal environmental factors are believed to be the main cause. The aim of this study was to describe the relationship between sarcopenia and gastric mobility and to investigate the relationship between sarcopenia and the concentration of gastrointestinal hormones in older patients.

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The zero echo time (ZTE) technique has improved the detection of lung nodules in PET/MRI but respiratory motion remains a challenge in lung scan. We investigated the feasibility and performance of fractionated deep-inspiration breath-hold (FDIBH) three-dimensional (3D) ZTE FDG PET/MRI for assessing lung nodules in patients with proved malignancy. Sixty patients who had undergone ZTE FDG PET/MRI and chest CT within a three-day interval were retrospectively included.

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Histologically undetermined early acral melanoma in situ (HUAMIS) is rare but a diagnostic challenge, being clinically and dermoscopically MIS (late onset, a large size (>7 mm), parallel ridges pattern) but microscopically without recognizable cytological atypia. Cyclin D1 (CCND1) gene amplification is a genetic aberration occurring in the early radial growth phase of AMs and could thus help determine malignancy for this disease. We determine the value of CCND1 amplification by FISH as a diagnostic marker for HUAMIS.

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Article Synopsis
  • In response to the COVID-19 outbreak in March 2020, a diverse team was formed in South Florida to rapidly develop testing capabilities for SARS-CoV-2 using various detection methods.
  • * The team faced challenges with reagent shortages but successfully collaborated with scientists and diagnostic labs to establish authorized testing protocols and drive-through facilities.
  • * Over a swift three-week period, they organized a workforce to process samples and launched a smart test ordering system, increasing testing capacity significantly to serve hundreds of healthcare workers and patients daily.
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We present a 56-year-old woman with metastatic follicular thyroid cancer at the nose tip with I uptake that is clinically rare, mimicking physiological uptake in the nose, a common finding seen after routine I therapeutic imaging. The lesion revealed a metastatic follicular thyroid cancer with I uptake and response to I therapy. Surgical removal, however, was not performed due to cosmetic and functional considerations.

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Objectives: To compare fluorescence in situ hybridization (FISH) and a commercially available sequencing assay for comprehensive genomic profiling (CGP) to determine the best approach to identify gene rearrangements (GRs) in large B-cell lymphomas (LBCLs).

Methods: Comparison of standard-of-care FISH assays (including a two-probe approach for MYC; break-apart and fusion probes) and an integrated genomic DNA/RNA sequencing CGP approach on a set of 69 consecutive LBCL cases.

Results: CGP detected GRs, including those involving MYC (1), BCL-2 (3), and BCL-6 (3), not detected by FISH.

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Article Synopsis
  • Follicular lymphoma (FL) is a common type of lymphoma in the U.S. and Europe, and its diagnosis and grading have not changed much according to the latest WHO classification updates.
  • FL exhibits a wide range of biological and histopathological variations, making some cases hard to identify due to their unique features or being rare variants.
  • This text discusses several unusual FL cases to increase awareness of the diverse histopathological characteristics, including FL variants with Castleman-like changes and those involving specific mutations or virus-related features.
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Background: Partial monosomy 21 is a rare finding with variable sizes and deletion breakpoints, presenting with a broad spectrum of phenotypes.

Case Presentation: We report a 10-month-old boy with short stature, minor anomalies and mild motor delay. The patient had a monosomy 21 and duplication of the 21q22.

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Conflict resolution in genomic variant interpretation is a critical step toward improving patient care. Evaluating interpretation discrepancies in copy number variants (CNVs) typically involves assessing overlapping genomic content with focus on genes/regions that may be subject to dosage sensitivity (haploinsufficiency (HI) and/or triplosensitivity (TS)). CNVs containing dosage sensitive genes/regions are generally interpreted as "likely pathogenic" (LP) or "pathogenic" (P), and CNVs involving the same known dosage sensitive gene(s) should receive the same clinical interpretation.

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Monocytosis can develop during disease course in primary myelofibrosis simulating that seen in chronic myelomonocytic leukemia, and should not lead to disease reclassification. In contrast, at presentation, rare cases have clinical, morphologic, and molecular genetic features truly intermediate between primary myelofibrosis and chronic myelomonocytic leukemia. The taxonomy and natural history of these diseases are unclear.

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Here we report the case of a 30-year-old woman with relapsed acute myeloid leukemia (AML) who was treated with all- retinoic acid (ATRA) as part of investigational therapy (NCT02273102). The patient died from rapid disease progression following eight days of continuous treatment with ATRA. Karyotype analysis and RNA-Seq revealed the presence of a novel t(4;15)(q31;q22) reciprocal translocation involving the and genes.

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The unparalleled heterogeneity in genetic causes of hearing loss along with remarkable differences in prevalence of causative variants among ethnic groups makes single gene tests technically inefficient. Although hundreds of genes have been reported to be associated with nonsyndromic hearing loss (NSHL), GJB2, GJB6, SLC26A4, and mitochondrial (mt) MT-RNR1 and MTTS are the major contributors. In order to provide a faster, more comprehensive and cost effective assay, we constructed a DNA fluidic array, CapitalBioMiamiOtoArray, for the detection of sequence variants in five genes that are common in most populations of European descent.

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Article Synopsis
  • - The study discusses a rare case of a 15-year-old girl diagnosed with primary mediastinal large B-cell lymphoma (PMLBCL), which is known for its aggressiveness and specific characteristics.
  • - Genetic testing revealed "double-hit" (DH) abnormalities involving the MYC and BCL6 genes, expanding the understanding of how DH events can occur in PMLBCL, where such associations were previously unreported.
  • - The findings highlight the importance of cytogenetic testing for DH abnormalities in aggressive large B-cell lymphomas to improve diagnosis and treatment options.
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The status of human epidermal growth factor receptor 2 (HER2, ERBB2) determines the eligibility of breast cancer patients to receive HER2-targeted therapy. The majority of HER2 testing in the U.S.

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Article Synopsis
  • * An 8-year-old orangutan diagnosed with diffuse large B-cell lymphoma underwent chemotherapy, including drugs like Rituxan and doxorubicin.
  • * After completing the treatment, the orangutan has maintained good health and normal behaviors for over 15 months.
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Acute myeloid leukemia (AML) with t(8:16) is an infrequent acute leukemia subtype. It can occur de novo or more frequently therapy-related. The presence of blasts with monocytoid morphology and erythrophagocytosis suggest the presence of the t(8;16).

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Background And Aim: Diagnosis of pancreatic malignancy is often based on cytological specimens collected by endoscopic ultrasound guided fine needle aspiration (EUS FNA). Several factors can decrease sensitivity of EUS FNA for pancreatic cancer: well-differentiated tumors, pancreatitis, blood, necrosis and slides with low cellularity. The objective of this study is to report on the use of fluorescence in situ hybridization (FISH) analysis combined with cytology in pancreatic masses.

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Background: Genomic microarrays have been used as the first-tier cytogenetic diagnostic test for patients with developmental delay/intellectual disability, autism spectrum disorders and/or multiple congenital anomalies. The use of SNP arrays has revealed regions of homozygosity in the genome which can lead to identification of uniparental disomy and parental consanguinity in addition to copy number variations. Consanguinity is associated with an increased risk of birth defects and autosomal recessive disorders.

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Mammary analog secretory carcinoma of salivary gland is a recently described entity with unique morphologic, clinical, and genetic characteristics, including the characteristic t(12;15)(p13;q25) with ETV6-NTRK3 translocation found in secretory carcinomas of the breast. Before their initial description, these salivary gland tumors were generally diagnosed as acinic cell carcinoma or adenocarcinoma. For the purpose of this study, all cases of salivary gland acinic cell carcinoma, cribriform cystadenocarcinoma, and adenocarcinoma, not otherwise specified (NOS), diagnosed over a 10-year period were retrieved from our surgical pathology files.

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The etiology and pathogenesis of ocular adnexal extranodal marginal zone lymphoma (OAEMZL) are still unknown and the association with Chlamydophila psittaci (C. psittaci) has been shown in only some geographic regions. Herein, we comprehensively examined the frequency of chromosomal translocations as well as CARD11, MYD88 (L265P), and A20 mutations/deletions in 45 C.

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Objective: Hypocomplementemic urticarial vasculitis syndrome (HUVS) is characterized by recurrent urticaria along with dermal vasculitis, arthritis, and glomerulonephritis. Systemic lupus erythematosus (SLE) develops in >50% of patients with HUVS, although the pathogenesis is unknown. The aim of this study was to identify the causative DNA mutations in 2 families with autosomal-recessive HUVS, in order to reveal the pathogenesis and facilitate the laboratory diagnosis.

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Genes and their products involved in the biological pathways of human cancers have been studied as either targets of new therapies, or predictive markers for the sensitivity of or resistance to the therapies. Companion diagnostic testing on biological markers for targeted cancer therapies has become a vital component of personalized cancer treatment. This article provides an overview on the biological pathways and biomarkers, including EGFR, KRAS, BRAF, ALK, ROS1, HER2, and KIT for targeted treatment of lung, gastrointestinal, colorectal, and breast cancers as well as malignant melanoma.

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Background: We studied the sensitivity of 2 relatively new markers of germinal center B-cell origin, namely human germinal center-associated lymphoma (HGAL) and Lim-only transcription factor 2 (LMO2), in the identification of follicular lymphomas (FLs) of the nongastric gastrointestinal (GI) tract.

Materials And Methods: We retrospectively reviewed cases of endoscopically derived primary, nongastric GI lymphomas including FL, grade 1 or 2, and extranodal marginal zone lymphoma (ENMZL) of mucosa-associated lymphoid tissue, classified based on morphologic features and immunohistochemical analysis. HGAL and LMO2 immunohistochemical stains were then prospectively performed in each case.

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