Publications by authors named "Tomohiro Kondo"

Introduction: Difamilast has proven to be an effective treatment for the treatment of atopic dermatitis (AD) in Japan, but its cost-effectiveness remains unknown. Therefore, the objective of the current study was to determine the cost-effectiveness of difamilast 1% compared with delgocitinib 0.5% in Japanese adult patients with moderate-to-severe AD and compared with placebo in Japanese adult patients with all-severity AD from a Japanese public health-care perspective.

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Background: Atopic dermatitis (AD) is a chronic condition with an increasing incidence in Japan. Difamilast and delgocitinib are both new topical drugs for AD proven to be efficacious and safe in phases 2 and 3 clinical trials in Japan. However, there are no head-to-head trials comparing their efficacy and safety.

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  • In 2022, a survey was conducted to understand how hospitals in Japan handle secondary findings from genetic tests, updating information from a 2020 survey.
  • About 82% of hospitals replied, and they mostly used a specific guideline (CTGPMRSF) for sharing secondary findings.
  • The results showed that many hospitals had challenges like insurance issues and different levels of understanding of secondary findings, but the rates for confirmatory tests (tests to double-check findings) were improving, especially in places with genetic experts.
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  • * 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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The pecten is a fold-structured projection at the ocular fundus in bird eyes, showing morphological diversity between the diurnal and nocturnal species. However, its biological functions remain unclear. This study investigated the morphological and histological characteristics of pectens in wild birds.

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  • A 70-year-old man with colon cancer had surgery, but his cancer came back and spread to his liver.
  • Doctors found a special change in his cancer called EGFR-KDD, which makes it grow faster.
  • After treatment with two types of medicines that target this change, his tumors shrank, showing these medicines could help others with the same issue.
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Neuroendocrine carcinoma (NEC) of the gallbladder origin is particularly rare, accounting for only 0.38% of primary malignancies of the gallbladder, and standard therapies are limited. The gene encodes the tyrosine kinase receptor, c-Met.

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The use of unmanned aerial vehicles (UAVs) has facilitated crop canopy monitoring, enabling yield prediction by integrating regression models. However, the application of UAV-based data to individual-level harvest weight prediction is limited by the effectiveness of obtaining individual features. In this study, we propose a method that automatically detects and extracts multitemporal individual plant features derived from UAV-based data to predict harvest weight.

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Despite advanced therapeutics, esophageal squamous cell carcinoma (ESCC) remains one of the deadliest cancers. Here, we propose a novel therapeutic strategy based on synthetic lethality combining trifluridine/tipiracil and MK1775 (WEE1 inhibitor) as a treatment for ESCC. This study demonstrates that trifluridine induces single-strand DNA damage in ESCC cells, as evidenced by phosphorylated replication protein 32.

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  • The study assesses the clinical utility of comprehensive genomic profiling (CGP) using next-generation sequencing for patients with previously untreated metastatic or recurrent solid tumors, highlighting the need for more evidence on its effectiveness before standard treatment.
  • Conducted in Japan, the multicenter observational study enrolled 180 patients with various types of advanced cancers to examine outcomes after CGP.
  • Results showed that all analyzed patients had actionable genomic alterations, with 63.4% identified as druggable, indicating CGP may help guide personalized treatment options.
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It has been demonstrated that in vivo brain ischemia induces activation and proliferation of astrocytes and microglia. However, the mechanism underlying the ischemia-induced activation and proliferation of these cells remains to be unclear. Oxygen-glucose deprivation (OGD), an in vitro ischemia mimic, has been extensively used to analyze the hypoxia response of various cell types.

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Pancreatic cancer and its rare subtype, acinar cell carcinoma (PACC), frequently harbor germline and/or somatic variants in homologous recombinant genes, including BRCA2. Individuals possessing germline pathogenic BRCA2 variants are known to have a higher risk of developing various cancers, including breast, ovarian, pancreatic, and bile duct cancers (BDCs). It has been reported that tumors positive for BRCA1/2 variants are sensitive to platinum-based agents.

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  • - Next-generation sequencing (NGS) was used to profile genes in pancreatic cancer patients to discover pathogenic variants in homologous recombination repair genes (HRRv), with findings suggesting a link to the effectiveness of platinum-based chemotherapy.
  • - In a prospective study involving 40 patients receiving oxaliplatin-based chemotherapy, HRRv was identified in 27.5% of participants, and outcomes showed no significant predictive value of HRRv status on overall survival rates after treatment.
  • - Though HRRv-positive patients had a one-year overall survival rate of 44.4%, this was not statistically superior to the 57.1% in HRRv-negative patients, indicating HRRv alone may not be a reliable predictive marker for treatment efficacy
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SMAD3 protein transduces signals from TGF-β and activins. In vitro studies have shown that SMAD3 plays an important role in regulating of micoglia and astrocytic function. However, there is little information on the association between SMAD3 signaling and the pathophysiology of the glial cells in the post-ischemic hippocampus.

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  • Scientists studied baby animals born to normal moms and moms who had some of their kidneys removed.
  • The babies born to the kidney-removed moms were lighter at first but didn't have changes in blood pressure.
  • However, when the researchers kept fewer of these babies together, they started growing faster and showed changes that could make them at risk for health problems later on.
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  • The study investigates the distinction between somatic and germline variants in circulating tumor DNA (ctDNA) testing, which typically requires analyzing non-tumor samples to identify germline variants.
  • A cohort of 106 patients with advanced solid tumors was analyzed using ctDNA tests, revealing that 223 pathogenic variants were identified, with varying variant allele fractions (VAFs) across samples.
  • The findings indicate that higher VAFs (≥30%) are more likely to correspond to germline variants, suggesting that VAF values can assist in selecting presumed germline variants during clinical ctDNA testing.
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Protein-protein interactions (PPIs) are crucial for various biological processes. Epstein-Barr virus (EBV) proteins typically form complexes, regulating the replication and persistence of the viral genome in human cells. However, the role of EBV protein complexes under physiological conditions remains unclear.

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Background: Sarcoidosis is a benign systemic granulomatous disorder of unknown etiology. Cell-mediated immunity disorder is often found in sarcoidosis patients, and an association between malignant tumors and sarcoidosis has been suggested. Sarcoidosis and malignant disease can occur simultaneously or sequentially, leading to misdiagnosis and mistreatment.

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  • - The ESMO-PMWG provided guidelines for confirmatory germline testing for presumed germline pathogenic variants (PGPVs) found in tumor-only genomic profiling, but these recommendations hadn't been tested in real-world settings until now.
  • - A study reviewed records of 143 patients who underwent tumor-only genomic profiling, identifying 195 variants, of which 12 were confirmed as germline variants, while filtering through ESMO-PMWG criteria revealed that 6 out of 7 selected PGPVs were of germline origin.
  • - The findings suggest that ESMO-PMWG criteria effectively help clinicians choose PGPVs likely to originate from germline sources, enhancing the validity of genomic testing in clinical practice.
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Background: Tumor heterogeneity has been known to cause inter-assay discordance among next-generation sequencing (NGS) results. However, whether preclinical factors such as sample type, sample quality and analytical features of gene panel can affect the concordance between two different assays remains largely unexplored.

Methods: Replicate sets of DNA samples extracted from formalin-fixed paraffin-embedded tissues (FFPE) (n = 20) and fresh frozen (FF) tissues (n = 10) were herein analyzed using a tumor-only (TO) and paired tumor-normal (TN) gene panel in laboratories certified by the Clinical Laboratory Improvement Amendment.

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In June 2019, the Japanese National Health Insurance (NHI) system introduced coverage for two types of tumor genomic profiling (TGP): FoundationOne CDx (F1) and OncoGuide™ NCC OncoPanel System (NCCOP). TGP sometimes reveals germline variants that are potentially pathogenic as secondary findings (SFs). We conducted a questionnaire-based survey to find out the operational statuses of F1 and NCCOP at institutions where TGP was performed to elucidate issues related to SFs.

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Despite the recommendations of the latest guidelines, the practical efficacy of universal screening for identifying Lynch syndrome (LS) among patients with colorectal cancer (CRC) may be limited in the real world due to infrequent referrals and the difficulties of genetic testing. Thus, the present study aimed to retrospectively analyze the results of universal screening of patients with CRC at a referral hospital in Japan. Immunohistochemistry was performed for mismatch repair proteins [including DNA mismatch repair protein MSH6 (MSH6), mismatch repair endonuclease PMS2 (PMS2), DNA mismatch repair protein Msh2 (MSH2) and DNA mismatch repair protein Mlh1 (MLH1)] and BRAF V600E mutation.

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In Japan, 2 comprehensive genome profiling(CGP)tests for cancer was covered by national health insurance in June 2019, and cancer genome medicine was introduced at a total of 225 hospitals designated by the Ministry of Health, Labor and Welfare as"core center hospitals for cancer genome medicine(12 hospitals)"," core hospitals for cancer genome medicine (33 hospitals)", and"collaborative hospitals for cancer genome medicine(180 hospitals)". On the other hand, the interpretation of the results of the cancer CGP test must be discussed by an expert panel conducted at the core center hospitals for cancer genome medicine or the core hospitals for cancer genome medicine, and the results must be explained to patients in order to be covered by insurance. In other words, these hospitals are required to review not only their own cases but also those of collaborating hospitals.

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Platinum doublet is the standard chemotherapy regimen for unresectable nonsmall-cell lung cancer (NSCLC) without a driver mutation. However, for squamous cell lung cancer, the most effective cytotoxic regimen is not yet established. Combination therapy of gemcitabine with a platinum agent is a highly effective treatment among the platinum doublet regimens and is promising as a treatment for advanced squamous cell lung carcinoma.

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Smad proteins are known to transduce the actions of the transforming growth factor-β (TGF-β) family including TGF-βs, activins, and bone morphogenetic proteins (BMPs). We previously reported that Smad1/5/9 immunoreactivity was observed in astrocytes of various rat brain regions including the hippocampus, suggesting that Smad1/5/9 may be associated with the physiology of astrocytes. However, the Smad1/5/9 expression and activation in the hippocampal astrocytes after global cerebral ischemia has not been yet elucidated.

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