Publications by authors named "Aung Win"

Background: Colorectal cancers (CRCs) from people with biallelic germline likely pathogenic/pathogenic variants in MUTYH or NTHL1 exhibit specific single base substitution (SBS) mutational signatures, namely combined SBS18 and SBS36 (SBS18+SBS36), and SBS30, respectively. The aim was to determine if adenomas from biallelic cases demonstrated these mutational signatures at diagnostic levels.

Methods: Whole-exome sequencing of FFPE tissue and matched blood-derived DNA was performed on 9 adenomas and 15 CRCs from 13 biallelic MUTYH cases, on 7 adenomas and 2 CRCs from 5 biallelic NTHL1 cases and on 27 adenomas and 26 CRCs from 46 non-hereditary (sporadic) participants.

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Background: Vinblastine is a widely used chemotherapeutic agent for various cancers. We report a case of transient congenital hypothyroidism following maternal exposure to vinblastine during the third trimester of pregnancy and propose possible mechanisms of action.

Method: We utilized the CARE guidelines to report the case.

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Pott's disease (PD), also known as spinal tuberculosis, accounts for an extremely low percentage of all tuberculosis (TB) cases and typically manifests secondary to an extra-spinal infection through the hematogenous spread. The thoracolumbar vertebrae are the most affected sites in PD, although other spinal regions can also be involved, albeit less frequently. Back pain is the predominant presenting symptom.

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The preoperative care of patients with cancer plays a pivotal role in ensuring optimal outcomes and enhancing the overall quality of life for individuals undergoing surgical interventions. This review aims to provide a comprehensive overview of the key considerations, challenges, and strategies involved in the preoperative management of oncology patients. We delve into the multidisciplinary approach required to address the unique needs of this patient population, emphasizing the importance of collaboration among surgeons, oncologists, anesthesiologists, primary care physicians, hospitalists, and other health care professionals.

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Article Synopsis
  • Colorectal cancers (CRCs) linked to biallelic germline variants show specific mutational signatures (SBS18+SBS36 and SBS30) that could also be present in adenomas, which are precursors to CRCs.
  • A study sequenced DNA from adenomas and CRCs in biallelic cases and compared them with sporadic cases to investigate these signatures.
  • Results indicated that adenomas in biallelic cases had similar mutational signature proportions as their corresponding CRCs, suggesting testing adenomas could enhance the detection of biallelic cases and improve variant classification for better CRC prevention strategies.
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  • - Giardiasis was found to be a significant cause of diarrhea in children, with a study conducted on 462 students in Yangon, Myanmar, revealing a prevalence rate of 11.7% over three years.
  • - The study utilized various identification techniques, including PCR-sequencing, and noted that socio-economic factors such as low parental education and unsanitary practices were linked to higher infection rates.
  • - All identified Giardia isolates belonged to assemblage B, marking this research as the first to characterize human isolates at the molecular level in a lower region of Myanmar, highlighting public health concerns in densely populated, low-resource areas.
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Surface-engineered gold nanoparticles have been considered as versatile systems for theranostics applications. Moreover, surface covering or stabilizing agents on gold nanoparticles especially gold nanobipyramids (AuNBPs) provides an extra space for cargo molecules entrapment. However, it is not well studied yet and also the preparation of AuNBPs still remains dependent largely on cetyltrimethylammonium bromide (CTAB), a cytotoxic surfactant.

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  • Survivors of colorectal cancer are at risk for developing a second primary colorectal cancer, termed metachronous colorectal cancer, and identifying features of the first tumor could help improve surveillance strategies.
  • In a study of 6085 colorectal cancer cases from the Colon Cancer Family Registry, 138 (2.3%) developed metachronous CRC over an average follow-up of 12 years, with specific factors influencing their risk.
  • Notably, individuals with synchronous tumors were 3.4 times more likely, and those with MMR-deficient tumors had a 72% higher risk, while those with an undifferentiated histologic type were 77% less likely to develop a second cancer. Existing surveillance guidelines may need
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Genome-wide association studies (GWAS) have identified more than 200 common genetic variants independently associated with colorectal cancer (CRC) risk, but the causal variants and target genes are mostly unknown. We sought to fine-map all known CRC risk loci using GWAS data from 100,204 cases and 154,587 controls of East Asian and European ancestry. Our stepwise conditional analyses revealed 238 independent association signals of CRC risk, each with a set of credible causal variants (CCVs), of which 28 signals had a single CCV.

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Young breast and bowel cancers (e.g., those diagnosed before age 40 or 50 years) have far greater morbidity and mortality in terms of years of life lost, and are increasing in incidence, but have been less studied.

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  • The study examined the connection between certain bacteria (pks E. coli, Enterotoxigenic Bacteroides fragilis, and Fusobacterium nucleatum) and colorectal cancer (CRC) by analyzing DNA samples from various cohorts.
  • Results revealed that pks E. coli is linked to male CRC patients and a specific APC gene mutation, mainly in early-onset cases, while F. nucleatum correlates with various cancer traits including DNA repair deficiencies and specific tumor locations.
  • The findings suggest that pks E. coli might cause DNA damage related to the identified mutation, and F. nucleatum exists in both hereditary and sporadic factors of DNA mismatch repair deficiencies, highlighting the importance of the tumor environment for bacterial colon
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Article Synopsis
  • - A systematic review and meta-analysis were conducted to identify risk factors for metachronous colorectal cancer (CRC) and advanced neoplasia, analyzing 22 studies involving over 625,000 participants from various databases up to February 2021.
  • - Key findings indicated that individuals diagnosed with initial CRC alongside synchronous advanced lesions had significantly higher risks of developing metachronous CRC or advanced neoplasia, with risk ratios showing a strong correlation.
  • - Factors such as the location of the first CRC (distal versus proximal) and increasing age were significant, with the latter showing a consistent increase in risk for advanced neoplasia, while lifestyle factors did not demonstrate any notable associations.
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Background: The coronavirus disease 2019 (COVID-19) pandemic caused significant disruptions to health care services and health impacts on patients with atopic dermatitis (AD) and/or food allergy (FA).

Objective: We evaluated the impact of the COVID-19 pandemic and disease on AD/FA patients.

Methods: A comprehensive systematic literature search was conducted from December 2019 to 2022.

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Bioinspired cell-membrane-camouflaged nanohybrids have been proposed to enhance tumor targeting by harnessing their immune escape and self-recognition abilities. In this study, we introduce cancer-cell-derived membrane nanovesicles (CCMVs) integrated with gold nanorods (AuVNRs) in addition to therapeutic and imaging cargos such as doxorubicin and indocyanine green. This approach enhances targeted tumor imaging and enables synergistic chemo-phototherapeutics for solid tumors.

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  • DEPTH (DEPendency of association on the number of Top Hits) is a method used to find candidate susceptibility regions linked to colorectal cancer by analyzing sequences of variants in the genome from large datasets.
  • In a study combining data from two major colorectal cancer research groups, DEPTH identified a significant number of candidate regions (569 in common between studies), and many of these were not detected using traditional genome-wide association study (GWAS) approaches.
  • The findings suggest that DEPTH could serve as a valuable tool alongside conventional GWAS for discovering new susceptibility regions, potentially improving understanding of genetic risks for colorectal cancer.
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  • The Prospective Lynch Syndrome Database (PLSD) gathers data on individuals with MMR variants to study cancer diagnosis and treatment outcomes, focusing on a newly expanded cohort.
  • The study includes over 8,500 patients from 25 countries, analyzing cancer incidence, mortality rates up to age 75, and survival rates after diagnosis.
  • Findings reveal that while gynecological cancers have high incidence rates among carriers, non-colorectal cancers lead to more deaths, highlighting the need for improved care for these patients.
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  • Routine screening for DNA mismatch repair (MMR) deficiency in certain tumors often results in unresolved cases labeled as suspected Lynch syndrome (SLS), with a study involving 135 such cases across Australia and New Zealand.
  • Targeted sequencing of tumors and matched blood samples revealed that 86.9% of these SLS cases could be classified into specific subtypes, primarily through the detection of double somatic MMR mutations.
  • The research indicates that implementing tumor-focused testing and MLH1 methylation assays in clinical settings can effectively clarify SLS diagnoses, leading to better surveillance and screening for patients.
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  • Routine screening for DNA mismatch repair deficiency in colorectal, endometrial, and sebaceous skin tumors has led to many unresolved cases suspected of Lynch syndrome, affecting 135 patients across Australia and New Zealand.
  • Targeted panel sequencing of tumors and matched blood DNA helped resolve 86.9% of these suspected cases by identifying various factors, including epimutations and germline MMR variants, with double somatic mutations being the most common cause.
  • The study suggests that incorporating tumor sequencing and methylation assays into clinical diagnostics could reduce unresolved cases and improve patient surveillance and screening strategies.
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Background: Birt-Hogg-Dubé (BHD) syndrome is a rare genetic syndrome caused by pathogenic or likely pathogenic germline variants in the gene. Patients with BHD syndrome have an increased risk of fibrofolliculomas, pulmonary cysts, pneumothorax and renal cell carcinoma. There is debate regarding whether colonic polyps should be added to the criteria.

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Using age- and height-adjusted total kidney volume, the Mayo Clinic Imaging Classification provides a validated approach to assess the risk of chronic kidney disease (CKD) progression in autosomal dominant polycystic kidney disease (ADPKD), but requires excluding patients with atypical imaging patterns, whose clinical characteristics have been poorly defined. We report an analysis of the prevalence, clinical and genetic characteristics of patients with atypical polycystic kidney disease by imaging. Patients from the extended Toronto Genetic Epidemiology Study of Polycystic Kidney Disease recruited between 2016 and 2018 completed a standardized clinical questionnaire, kidney function assessment, genetic testing, and kidney imaging by magnetic resonance or computed tomography.

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Colorectal cancer (CRC) is a leading cause of mortality worldwide. We conducted a genome-wide association study meta-analysis of 100,204 CRC cases and 154,587 controls of European and east Asian ancestry, identifying 205 independent risk associations, of which 50 were unreported. We performed integrative genomic, transcriptomic and methylomic analyses across large bowel mucosa and other tissues.

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Background: Non-communicable diseases (NCDs) are increasing in Myanmar. There have been limited studies to assess the health service system for NCDs patients at the primary health care (PHC) level. We aimed to assess and compare the health service readiness, availability, and utilization of PHC facilities for NCDs in districts in Myanmar.

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