161 results match your criteria: "Kyoundo Hospital.[Affiliation]"

STIL is a regulatory protein essential for centriole biogenesis, and its dysregulation has been implicated in various diseases, including malignancies. However, its role in non-small-cell lung carcinoma (NSCLC) remains unclear. In this study, we examined STIL expression and its potential association with chromosomal numerical abnormalities (CNAs) in NSCLC using The Cancer Genome Atlas (TCGA) dataset, immunohistochemical analysis, and in vitro experiments with NSCLC cell lines designed to overexpress STIL.

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A germline alteration in the PTEN gene causes a spectrum of disorders conceptualized as PTEN hamartoma tumor syndrome (PHTS), which show high risk of tumor development and a highly variable and complex phenotype. The diagnosis of PHTS is established in a proband by identification of a heterozygous germline PTEN pathogenic variant on molecular genetic testing. In this study, to understand more PTEN-associated clinical phenotype and PHTS in a Japanese population, we extracted 128 germline PTEN rare variants from 113,535 adult Japanese registered in Biobank Japan (BBJ), and categorized 29 pathogenic/likely pathogenic variants in 30 individuals (0.

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Aim: Lynch syndrome (LS) is a dominantly inherited syndrome characterized by an increased risk for LS associated tumors such as colorectal cancer (CRC) and gastric cancer (GC). However, the clinical benefit of surveillance for GC remains unclear while it has already been recommended for CRC. This study aimed to elucidate the clinical features of GC in Japanese individuals with LS, and the risk of developing multiple GCs to build regional-tailored surveillance programs in LS patients with GC.

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Lynch syndrome screening in patients with young-onset extra-colorectal Lynch syndrome-associated cancers.

Int J Clin Oncol

November 2024

Department of Clinical Oncology, Kyoto University Hospital, 54 Shogoin-kawahara-cho, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan.

Article Synopsis
  • * A study analyzed 309 tissue samples from patients under 50, finding that 7.8% had deficient MMR tumors, predominantly in endometrial cancers, with a notable link to a family history of LS-associated cancers.
  • * The results highlight the potential for a broader LS screening program that includes young patients with diverse extra-colorectal cancers, showing it may effectively identify those at increased risk due to LS.
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Identification of a rare MET variant in three siblings with extramammary Paget disease.

Clin Exp Dermatol

July 2024

Department of Dermatology, Tachikawa Hospital, Federation of National Public Service Personnel Mutual Aid Associations, Tokyo, Japan.

Article Synopsis
  • Extramammary Paget disease (EMPD) is a skin cancer primarily found in the genital and underarm areas of older adults, with limited studies on its genetics, especially in familial cases.* -
  • This report presents the first known familial cases of EMPD involving three siblings, who all showed a specific genetic variant in the MET gene linked to the disease.* -
  • Further research is needed to better understand the impact of MET gene variants on the development of EMPD, particularly in families with multiple affected members.*
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A 74-year-old man with situs inversus totalis visited our hospital for a positive fecal occult blood. He was diagnosed with transverse colon cancer by total colonoscopy. We performed laparoscopic partial colectomy.

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Cowden syndrome (CS)/ hamartoma tumor syndrome (PHTS) is a rare autosomal dominantly inherited condition caused by germline pathogenesis. It is associated with multiple hamartomatous lesions occurring in various organs and tissues, including the gastrointestinal tract, skin, mucous membranes, breast, thyroid, endometrium, and brain. Macrocephaly or multiple characteristic mucocutaneous lesions commonly develop in individuals in their 20s.

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Familial adenomatous polyposis (FAP) patients develop various life-threatening extracolonic comorbidities that appear individually or within a family. This diversity can be explained by the localization of the adenomatous polyposis coli (APC) variant, but few reports provide definitive findings about genotype-phenotype correlations. Therefore, we investigated FAP patients and the association between the severe phenotypes and APC variants.

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Article Synopsis
  • A multicenter study was conducted with 1,742 patients who achieved a sustained viral response (SVR) after chronic hepatitis C treatment to create a machine learning model for predicting the risk of developing hepatocellular carcinoma (HCC).
  • Five machine learning models were evaluated, with the random survival forest (RSF) model performing the best in predicting HCC risk during a follow-up period, achieving a c-index of 0.839 in an independent cohort.
  • The RSF model provides individualized risk predictions and is available online, signaling the potential to enhance surveillance strategies for HCC following SVR, although further studies are needed for tailored surveillance recommendations globally.
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Article Synopsis
  • Genetic testing methods like sequencing analysis and MLPA are typically used to diagnose familial adenomatous polyposis (FAP), but some genetic changes can be hard to detect.
  • A case study of a woman with FAP showed that complex genomic rearrangements could be identified through advanced techniques such as multigene panel testing, chromosomal analysis, and long-read sequencing.
  • The study highlights the importance of using comprehensive genomic analyses when standard testing fails to find genetic variants, especially in patients with a relevant medical or family history of hereditary cancer syndromes.
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Background: Platelet (PLT) transfusion was the most practical way to increase patients' PLT counts before invasive hepatic procedures such as radiofrequency ablation (RFA) for hepatocellular carcinoma (HCC). A novel drug that raises the PLT count by acting on the thrombopoietin receptor has recently become available.

Methods: Lusutrombopag 3 mg was administered daily for 7 days to patients who underwent RFA for liver tumors with low PLT counts (< 50,000 PLT µL).

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A 40-year-old female, who underwent transcatheter arterial embolization due to acute bleeding from an iliolumbar artery, was subsequently genetically diagnosed with vascular Ehlers-Danlos syndrome. She experienced chronic anemia for many years due to the easy bruising of her whole body. The bruising improved with oral administration of celiprolol hydrochloride.

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Bronchial asthma (BA) is a heterogeneous disease. Some patients benefit greatly from glucocorticoid (GC) treatment, whereas others are non-responders. This could be attributable to differences in pathobiology.

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Substantial numbers of variants of unknown significance (VUSs) have been identified in BRCA1/2 through genetic testing, which poses a significant clinical challenge because the contribution of these VUSs to cancer predisposition has not yet been determined. Here, we report 10 Japanese patients from seven families with breast or ovarian cancer harboring the BRCA2 c.7847C>T (p.

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, Homologous-Recombination Genes, and Gastric Cancer.

N Engl J Med

March 2023

From the Laboratories for Genotyping Development (Y.U., M.E., Y.I., T.A., N.H., S.T., K. Suzuki, Y. Momozawa), Statistical and Translational Genetics (C.T.), and Cancer Genomics (H.N.), RIKEN Center for Integrative Medical Sciences, Yokohama, the Divisions of Cancer Information and Control (Y.U., Y.T., Y.N.K., H.I.) and Cancer Epidemiology and Prevention (Y. Kasugai, I.O., K. Matsuo), Department of Preventive Medicine, Aichi Cancer Center, the Divisions of Cancer Epidemiology (Y. Kasugai, K. Matsuo) and Descriptive Cancer Epidemiology (H.I.), Nagoya University Graduate School of Medicine, Aichi Cancer Center Research Institute (I.I.), and the Department of Endoscopy (T.T., M.T.), Aichi Cancer Center Hospital (Y.N.), Nagoya, the Department of Hematology, Oncology, and Respiratory Medicine, Okayama University Medical School, Okayama (Y.U.), the Laboratory of Microbial Carcinogenesis, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation (M. Hatakeyama), the Department of Genetic Medicine and Services, National Cancer Center Hospital (M. Hirata, K. Sugano, T.Y.), the Division of Molecular Pathology, Department of Cancer Biology, Institute of Medical Science (M. Hirata, Y. Murakami), and the Laboratories of Complex Trait Genomics (Y. Kamatani) and Clinical Genome Sequencing (K. Matsuda), Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, University of Tokyo, and the Department of Genetic Medicine, Kyoundo Hospital, Sasaki Foundation (K. Sugano), Tokyo, and the Research Center of Infection-Associated Cancer, Institute for Genetic Medicine, Hokkaido University, Sapporo (M. Hatakeyama) - all in Japan; and the Population Health Program, QIMR (Queensland Institute of Medical Research) Berghofer Medical Research Institute, Brisbane, Australia (A.B.S.).

Background: infection is a well-known risk factor for gastric cancer. However, the contribution of germline pathogenic variants in cancer-predisposing genes and their effect, when combined with infection, on the risk of gastric cancer has not been widely evaluated.

Methods: We evaluated the association between germline pathogenic variants in 27 cancer-predisposing genes and the risk of gastric cancer in a sample of 10,426 patients with gastric cancer and 38,153 controls from BioBank Japan.

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Skin-related complications of insulin therapy have long been a problem as a factor interfering with insulin therapy. Among the traditional skin-related complications, lipoatrophy and insulin allergy have decreased markedly with the development of insulin preparations, but lipohypertrophy is still common in insulin-treated patients. Recently, there have been more reports of a skin-related complication called insulin-derived amyloidosis or insulin ball.

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Objective: This study prospectively observed the incidence of all malignancies and the prognosis of all patients in a population of patients who achieved Sustained Virological Response (SVR) with a 100% capture rate.

Design: A prospective study of 651 SVR cases was conducted from July 2013 to December 2021. The primary endpoint was the occurrence of all malignancies, and the secondary endpoint was overall survival.

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Tissue factor-induced fibrinogenesis mediates cancer cell clustering and multiclonal peritoneal metastasis.

Cancer Lett

January 2023

Department of Cancer Cell Research, Sasaki Institute, Sasaki Foundation, Tokyo, 101-0062, Japan. Electronic address:

Peritoneal metastasis is one of the most frequent causes of death in several types of advanced cancers; however, the underlying molecular mechanisms remain largely unknown. In this study, we exploited multicolor fluorescent lineage tracking to investigate the clonality of peritoneal metastasis in mouse xenograft models. When peritoneal metastasis was induced by intraperitoneal or orthotopic injection of multicolored cancer cells, each peritoneally metastasized tumor displayed multicolor fluorescence regardless of metastasis sites, indicating that it consists of multiclonal cancer cell populations.

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Article Synopsis
  • Biliary tract cancer (BTC) is linked to Lynch syndrome (LS) and has a high mortality rate; this study aimed to examine its clinical features and management in LS patients.* -
  • Data from 92 LS individuals in Japan revealed that 6 developed BTC, mainly differentiated adenocarcinoma, with a median diagnosis age of 69; all lesions showed high microsatellite instability (MSI-H).* -
  • The findings suggest that MSI testing can help identify LS in BTC patients, and it is recommended to have regular screenings for BTC in LS carriers in Japan.*
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Purpose: To gauge the effects of treatment practices on prognosis for older patients with HER2-positive early breast cancer, particularly to determine whether adjuvant trastuzumab alone can offer benefit over no adjuvant therapy. This is a prospective cohort study which accompanies the RESPECT that is a randomized-controlled trial (RCT).

Methods: Patients who declined the RCT were treated based on the physician's discretion.

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Article Synopsis
  • The FABRIC study aimed to test the effectiveness of GEMOX chemotherapy in pancreatic cancer patients with a family history of certain cancers, but results were inconclusive.
  • An ancillary analysis included 27 patients to look for germline variants in genes related to DNA repair and how these variants might affect treatment response and outcomes.
  • Results showed that while germline variants were rare, patients with these variants had a better objective response to GEMOX, and their presence was linked to improved progression-free and overall survival rates.
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The application of advanced molecular technology has significantly expanded lymphoma classification, allowing risk stratification and treatment optimization. Limited evidence suggests the presence of a genetic predisposition in lymphoma, indicating the potential for better individualized clinical management based on a novel lymphoma classification. Herein, we examined the impact of germline pathogenic variants in 27 cancer-predisposing genes with lymphoma risk and explored the clinical characteristics of pathogenic variant carriers.

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We herein report two cases of thymic cancer with Lynch syndrome showing a high frequency of microsatellite instability and loss of mismatch repair protein expression without MLH1 promoter hyper-methylation. In Case 1, a 71-year-old man had a pathogenic germline variant in MLH1 and underwent tumor resection. No relapse has been reported thus far.

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Identifying causative genes via genetic testing is useful for screening, preventing and treating cancer. Several hereditary syndromes occur in patients with renal cell carcinoma (RCC). However, the evidence is from the European population; it remains unclear how the RCC-related genes and other cancer-predisposing genes contribute to RCC development in the Japanese population.

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