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GLI1, CDK4, and MDM2 Co-Amplification Gastric Plexiform Fibromyxoma: A Case Report and Literature Review GLI1、CDK4 和 MDM2 共同扩增胃丛状纤维瘤:病例报告与文献综述
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-11-13 DOI: 10.1002/gcc.70005
Shihui Zhang, Ye Yang, Jianwei Li, Zheng Li, Weihua Li, Susheng Shi
{"title":"GLI1, CDK4, and MDM2 Co-Amplification Gastric Plexiform Fibromyxoma: A Case Report and Literature Review","authors":"Shihui Zhang,&nbsp;Ye Yang,&nbsp;Jianwei Li,&nbsp;Zheng Li,&nbsp;Weihua Li,&nbsp;Susheng Shi","doi":"10.1002/gcc.70005","DOIUrl":"10.1002/gcc.70005","url":null,"abstract":"<div>\u0000 \u0000 <p>Plexiform fibromyxoma (PF) is a rare mesenchymal tumor that primarily occurs in gastric origin with a benign behavior. PF commonly harbors the <i>MALAT1::GLI1</i> fusion gene. Here, we describe a case of a 36-year-old female with a PF. Abdominal computed tomography (CT) showed a 3.3 cm mass in the stomach. She underwent laparoscopic partial gastrectomy. Immunohistochemistry (IHC) of the tumor revealed strongly positive staining for <i>CD34</i>, <i>SDHB</i>, <i>STAT6</i>, <i>MDM2</i>, and <i>CDK4</i>. And the tumor showed <i>TP53</i> mutant expression. Next-generation sequencing (NGS) comprehensive genomic profiling identified <i>GLI1</i>, <i>CDK4</i>, and <i>MDM2</i> co-amplification and <i>TP53</i> mutations. Here, we first report a case of a young woman with a PF harboring co-amplification of <i>GLI1</i>, <i>CDK4</i>, and <i>MDM2</i> genes. The patient underwent complete removal of the tumor without the use of radiotherapy or chemotherapy. No recurrence was observed during the follow-up period of 8 months. This study aims to improve our understanding of PF by analyzing the clinicopathological characteristics of this case, including immunohistochemical (IHC) and genetic examination, and reviewing relevant literature.</p>\u0000 </div>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 11","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142618637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of Pediatric Acute Myeloid Leukemia With t(7;12)(q36;p13) t(7;12)(q36;p13)小儿急性髓性白血病的特征。
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-11-07 DOI: 10.1002/gcc.70003
Anders Östlund, Ahmed Waraky, Anna Staffas, Helene Sjögren, Barbara De Moerloose, Nira Arad-Cohen, Daniel Cheuk, Jose Maria Fernandez Navarro, Kirsi Jahnukainen, Gertjan J. L. Kaspers, Zhanna Kovalova, Ramune Pasauliene, Kadri Saks, Bernward Zeller, Ulrika Norén-Nyström, Henrik Hasle, Linda Fogelstrand, Jonas Abrahamsson, Lars Palmqvist
{"title":"Characterization of Pediatric Acute Myeloid Leukemia With t(7;12)(q36;p13)","authors":"Anders Östlund,&nbsp;Ahmed Waraky,&nbsp;Anna Staffas,&nbsp;Helene Sjögren,&nbsp;Barbara De Moerloose,&nbsp;Nira Arad-Cohen,&nbsp;Daniel Cheuk,&nbsp;Jose Maria Fernandez Navarro,&nbsp;Kirsi Jahnukainen,&nbsp;Gertjan J. L. Kaspers,&nbsp;Zhanna Kovalova,&nbsp;Ramune Pasauliene,&nbsp;Kadri Saks,&nbsp;Bernward Zeller,&nbsp;Ulrika Norén-Nyström,&nbsp;Henrik Hasle,&nbsp;Linda Fogelstrand,&nbsp;Jonas Abrahamsson,&nbsp;Lars Palmqvist","doi":"10.1002/gcc.70003","DOIUrl":"10.1002/gcc.70003","url":null,"abstract":"<p>Acute myeloid leukemia (AML) with t(7;12)(q36;p13) is a recurrent translocation in AML in infants or very young children and was recently included in the World Health Organization (WHO) Classification of Hematolymphoid Tumors. AML with t(7;12) is reported to involve <i>MNX1</i> and <i>ETV6</i> signaling; however, the mechanism of leukemogenesis is not well understood, and the presence of <i>MNX1</i>::<i>ETV6</i> fusion transcripts has only been confirmed in approximately 50% of cases. In contrast, high expression of <i>MNX1</i> has been seen in all investigated cases. In this study, we investigated the clinical as well as biological characteristics of 12 pediatric AML with t(7;12) and performed whole transcriptome (WTS) and whole genome sequencing (WGS) on six of these. There was no significant difference in event-free survival or overall survival of these t(7;12) AML patients compared with other AML in the same age group. Interestingly, WTS identified several fusion transcripts involving <i>ETV6</i> but not together with <i>MNX1</i>. WGS identified the genomic breakpoints and revealed that a common fusion partner on chromosome 7 was <i>NOM1</i>. Principal component analysis (PCA) of the WTS data showed that all t(7;12) AML cases cluster together, separate from all other pediatric AML subtypes; all cases had high expression of <i>MNX1</i>, <i>MNX1-AS1</i>, and <i>MNX1-AS2</i>. Hence, t(7;12) AML, despite expressing different fusion transcripts and with varying translocation breakpoints, constitutes a phenotypically homogenous subgroup. This underlines that the leukemia-driving event most likely is ectopic expression of <i>MNX1</i> and that this therefore should be the defining Classifying criteria of this type of AML.</p>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 11","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gcc.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Malignant Peripheral Nerve Sheath Tumor (MPNST) With Smooth Muscle Differentiation of the Uterus—A Case Report With Emphasis on Diagnostic Pitfalls and Value of DNA Methylation Analysis 子宫平滑肌分化的恶性周围神经鞘瘤(MPNST)--病例报告,强调诊断陷阱和 DNA 甲基化分析的价值。
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-11-07 DOI: 10.1002/gcc.70006
Horace M. H. Cheung, Anthony P. Y. Liu, Maximus C. F. Yeung
{"title":"Malignant Peripheral Nerve Sheath Tumor (MPNST) With Smooth Muscle Differentiation of the Uterus—A Case Report With Emphasis on Diagnostic Pitfalls and Value of DNA Methylation Analysis","authors":"Horace M. H. Cheung,&nbsp;Anthony P. Y. Liu,&nbsp;Maximus C. F. Yeung","doi":"10.1002/gcc.70006","DOIUrl":"10.1002/gcc.70006","url":null,"abstract":"<div>\u0000 \u0000 <p>With no more than two dozen cases reported in the literature, malignant peripheral nerve sheath tumor (MPNST) is a rare primary mesenchymal neoplasm arising in the female genital tract. Most cases occurred in middle-aged adults with high grade histology, unfavorable clinical outcome, and no history of neurofibromatosis type 1. Its extreme rarity in this site no doubt poses a diagnostic challenge during routine clinical practice. In the following, we report an additional case of uterine MPNST occurring in a 49-year-old Chinese woman, which was initially misdiagnosed as a leiomyosarcoma. The primary tumor showed two distinctive components—a high-grade poorly differentiated component with markedly pleomorphic spindle cells arranged in a peritheliomatous pattern; and a leiomyosarcoma-like (LMS-like) component with tumor cells displaying obvious myoid differentiation. The patient suffered a recurrence less than 2 years later with the recurrent tumor demonstrating similar features to the high-grade component of the primary tumor. The patient eventually succumbed 46 months later after developing another recurrence despite receiving targeted therapy and chemotherapy. On retrospective molecular analysis, no clinically relevant fusion transcript was detected on RNA sequencing. Interestingly instead, DNA methylation analysis showed the tumor clustered with the “MPNST” group in the German Cancer Research Center (DKFZ) sarcoma classifier. The tumor was also found to have <i>EED</i> gene homozygous deletion, multiple copy number alterations and loss of H3K27me3 expression in both high-grade and LMS-like components. Combining histology with all the ancillary tests results, the diagnosis was most consistent with MPNST. Our case highlights the diagnostic pitfalls for MPNST arising in the female genital tract and the potential clinical utility of DNA methylation analysis.</p>\u0000 </div>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 11","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sporadic Breast Angiosarcoma With MYC Amplification on Extrachromosomal Circular DNA Detected Using Nanopore Sequencing in an Adolescent Female 利用纳米孔测序技术检测到一名青少年女性染色体外环状DNA上MYC扩增的散发性乳腺血管肉瘤
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-11-07 DOI: 10.1002/gcc.70004
Naohiro Makise, Jason Lin, Hajime Kageyama, Mariko Oikawa, Takahiro Sugiyama, Hidetada Kawana, Akinobu Araki, Shouko Hayama, Rikiya Nakamura, Hideyuki Kinoshita, Hiroto Kamoda, Yoko Hagiwara, Tsukasa Yonemoto, Masahito Kawazu, Makiko Itami
{"title":"Sporadic Breast Angiosarcoma With MYC Amplification on Extrachromosomal Circular DNA Detected Using Nanopore Sequencing in an Adolescent Female","authors":"Naohiro Makise,&nbsp;Jason Lin,&nbsp;Hajime Kageyama,&nbsp;Mariko Oikawa,&nbsp;Takahiro Sugiyama,&nbsp;Hidetada Kawana,&nbsp;Akinobu Araki,&nbsp;Shouko Hayama,&nbsp;Rikiya Nakamura,&nbsp;Hideyuki Kinoshita,&nbsp;Hiroto Kamoda,&nbsp;Yoko Hagiwara,&nbsp;Tsukasa Yonemoto,&nbsp;Masahito Kawazu,&nbsp;Makiko Itami","doi":"10.1002/gcc.70004","DOIUrl":"10.1002/gcc.70004","url":null,"abstract":"<div>\u0000 \u0000 <p>Angiosarcoma (AS) is a malignant vascular neoplasm comprising neoplastic endothelial cells accounting for 1%–4% of soft tissue sarcomas. While lymphedema-associated and post-irradiation ASs are almost always driven by a high-level amplification of <i>MYC</i> (8q24), sporadic ASs, including those of breast parenchymal origin, typically lack <i>MYC</i> amplification. Here, we report a case of sporadic breast <i>MYC</i>-amplified AS in a 19-year-old female with no history of lymphedema or irradiation, who was referred to our hospital for an enlarging right breast mass. After needle biopsy, the patient underwent right mastectomy and axillary lymphadenectomy. Microscopically, atypical endothelial cells proliferated and formed well-defined or slit-like vascular channels that invaded and dissected the breast parenchymal fat, ducts, and lobules. In a limited area, the tumor cells showed solid sheet-like proliferation with increased mitotic figures of 40 per 2 mm<sup>2</sup> with a small area of necrosis. Immunohistochemical analysis revealed strong positivity for c-Myc. Fluorescence in situ hybridization (FISH) with <i>MYC</i> break-apart probes showed a high-level 5′ single signal amplification. The patient was disease-free 16 months post-surgery. Nanopore sequencing successfully detected not only a high-level amplification of the 8q24 region, including <i>MYC</i>, but also multiple structural variants of the 8q24 region. In-depth analysis revealed extrachromosomal circular DNA amplification including the <i>MYC</i> protein-coding region and upstream region but not the downstream region. We also performed methylation classification using nanopore-based methylation data to successfully categorize the tumor as AS. This case report highlights the potential utility of nanopore sequencing in the diagnosis of sarcomas.</p>\u0000 </div>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 11","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microsatellite Instability and Loss of Heterozygosity as Prognostic Markers in Oral Squamous Cell Carcinoma: Molecular Mechanisms, Detection Techniques, and Therapeutic Strategies 作为口腔鳞状细胞癌预后标志物的微卫星不稳定性和异质性丢失:分子机制、检测技术和治疗策略。
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-10-29 DOI: 10.1002/gcc.70002
Leyla Arslan Bozdag, Sevinç Inan, Sibel Elif Gultekin
{"title":"Microsatellite Instability and Loss of Heterozygosity as Prognostic Markers in Oral Squamous Cell Carcinoma: Molecular Mechanisms, Detection Techniques, and Therapeutic Strategies","authors":"Leyla Arslan Bozdag,&nbsp;Sevinç Inan,&nbsp;Sibel Elif Gultekin","doi":"10.1002/gcc.70002","DOIUrl":"10.1002/gcc.70002","url":null,"abstract":"<p>The aim of this study was to conduct a systematic review of research investigating the potential role of microsatellite instability (MSI) and loss of heterozygosity (LOH) in oral squamous cell carcinoma (OSCC), with a focus on molecular mechanisms, detection methods, and therapeutic approaches. Search for articles involved the PubMed and Scopus. Previous retrospective and prospective studies identified variations between oral cancers that exhibit microsatellite stability and LOH. In this search, 294 articles were initially retrieved. Of these, 70 were excluded due to duplication, 106 were identified as ineligible by automated tools, and 24 were excluded as they were published in languages other than English. An additional 94 articles were excluded, 32 of which focused on head and neck cancers broadly, and 8 could not be accessed due to withdrawal. Ultimately, a systematic review was conducted based on 54 selected articles. Among the chromosomes analyzed for MSI and LOH, the highest frequency of LOH was observed on chromosome 9p. The MSI subtype is particularly susceptible to immunotherapeutic methods, such as the use of anti-PD-L1 and anti-CTLA4 antibodies, owing to its strong immunogenicity and ubiquitous expression of immune checkpoint ligands. Given the distinct characteristics and clinical behavior of oral cancer with MSI compared to microsatellite stable disease, it is advisable to incorporate MSI testing into the diagnostic process for all stages of tumor development. This ensured that each patient had received precise and effective treatment.</p>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gcc.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142521727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aggressive Spindle Cell Sarcoma in Young Woman With the FGFR1::EBF2 Fusion 年轻女性患侵袭性纺锤形细胞肉瘤,与 FGFR1::EBF2 融合
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-10-18 DOI: 10.1002/gcc.70000
Harumi Nakamura, Yoji Kukita, Ken-ichi Yoshida, Hironari Tamiya, Shigeki Kadonaga, Satoshi Takenaka, Toshinari Yagi
{"title":"Aggressive Spindle Cell Sarcoma in Young Woman With the FGFR1::EBF2 Fusion","authors":"Harumi Nakamura,&nbsp;Yoji Kukita,&nbsp;Ken-ichi Yoshida,&nbsp;Hironari Tamiya,&nbsp;Shigeki Kadonaga,&nbsp;Satoshi Takenaka,&nbsp;Toshinari Yagi","doi":"10.1002/gcc.70000","DOIUrl":"https://doi.org/10.1002/gcc.70000","url":null,"abstract":"","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cell Senescence and the Genetics of Melanoma Development 细胞衰老与黑色素瘤的遗传学发展
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-10-18 DOI: 10.1002/gcc.23273
Sophie M. Constantinou, Dorothy C. Bennett
{"title":"Cell Senescence and the Genetics of Melanoma Development","authors":"Sophie M. Constantinou,&nbsp;Dorothy C. Bennett","doi":"10.1002/gcc.23273","DOIUrl":"https://doi.org/10.1002/gcc.23273","url":null,"abstract":"<p>Cutaneous malignant melanoma is an aggressive skin cancer with an approximate lifetime risk of 1 in 38 in the UK. While exposure to ultraviolet radiation is a key environmental risk factor for melanoma, up to ~10% of patients report a family history of melanoma, and ~1% have a strong family history. The understanding of causal mutations in melanoma has been critical to the development of novel targeted therapies that have contributed to improved outcomes for late-stage patients. Here, we review current knowledge of the genes affected by familial melanoma mutations and their partial overlap with driver genes commonly mutated in sporadic melanoma development. One theme linking a set of susceptibility loci/genes is the regulation of skin pigmentation and suntanning. The largest functional set of susceptibility variants, typically with high penetrance, includes <i>CDKN2A</i>, <i>RB1</i>, and telomerase reverse transcriptase (<i>TERT</i>) mutations, associated with attenuation of cell senescence. We discuss the mechanisms of action of these gene sets in the biology and progression of nevi and melanoma.</p>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gcc.23273","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sporadic NF1-Mutated Inflammatory Polyps of the Colon: A Case Report and Brief Literature Review 散发性 NF1 基因突变结肠炎症性息肉:病例报告和简要文献综述
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-10-18 DOI: 10.1002/gcc.70001
Azfar Neyaz, Ibrahim Abukhiran, Rana Naous
{"title":"Sporadic NF1-Mutated Inflammatory Polyps of the Colon: A Case Report and Brief Literature Review","authors":"Azfar Neyaz,&nbsp;Ibrahim Abukhiran,&nbsp;Rana Naous","doi":"10.1002/gcc.70001","DOIUrl":"https://doi.org/10.1002/gcc.70001","url":null,"abstract":"","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Potential Use of Extracellular Vesicles for the HER2 Status Assessment in Breast Cancer Patients 细胞外小泡在乳腺癌患者 HER2 状态评估中的潜在用途
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-10-16 DOI: 10.1002/gcc.23264
Sol Moon, Seung Il Kim, Suji Lee, Hyojung Lee, Young Kim, Joon Ye Kim, Min Woo Kim, Jee Ye Kim
{"title":"Potential Use of Extracellular Vesicles for the HER2 Status Assessment in Breast Cancer Patients","authors":"Sol Moon,&nbsp;Seung Il Kim,&nbsp;Suji Lee,&nbsp;Hyojung Lee,&nbsp;Young Kim,&nbsp;Joon Ye Kim,&nbsp;Min Woo Kim,&nbsp;Jee Ye Kim","doi":"10.1002/gcc.23264","DOIUrl":"https://doi.org/10.1002/gcc.23264","url":null,"abstract":"<p>Human epithelial growth factor receptor 2 (HER2)-targeted therapies are effective in patients with HER2-positive breast cancer. Recent advances have shown that HER2-targeted therapies can also be of benefit when treating tumors expressing low levels of HER2, highlighting the importance of identifying the HER2-low subgroup. This clinical trend has opened new therapeutic avenues for patients who were previously ineligible for HER2-targeted therapies. Thus, the development of new diagnostic methods for real-time HER2 profiling is crucial for accurately tailoring the treatment for these patients. We hypothesized that tumor-derived extracellular vesicles (TEVs) could reflect the HER2 profiles of primary tumors and potentially serve as diagnostic tools for HER2 status. This approach was validated using six breast cancer cell lines, which confirmed that the TEVs accurately reflected the HER2 profiles of the tumor cells. TEVs were isolated using an immunoaffinity method, and copy number variation (CNV) in the <i>ERBB2/EIF2C</i> ratio was assessed using droplet digital PCR of DNA from these vesicles. Clinical validation using plasma samples from 33 breast cancer patients further reinforced the diagnostic potential of our method. Pearson's correlation coefficient analysis of the flow cytometry results demonstrated that TEVs reflected HER2 expression in primary cells. To distinguish between HER2-negative and HER2-low patients, the area under the curve (AUC) of the ROC curve in our method was 0.796, with a sensitivity of 53.8% and a specificity of 100%. These findings suggest the clinical utility of extracellular vesicles derived from plasma and emphasize the need for further research to distinguish HER2-negative from HER2-low patients.</p>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gcc.23264","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular Profiling of Low-Grade Appendiceal Mucinous Neoplasms (LAMN) 低级别阑尾粘液性肿瘤(LAMN)的分子谱分析
IF 3.1 2区 医学
Genes, Chromosomes & Cancer Pub Date : 2024-10-14 DOI: 10.1002/gcc.23270
Julia Doll, Katja Maurus, Franziska Köhler, Niels Matthes, Johan F. Lock, Christoph-Thomas Germer, Andreas Rosenwald, Armin Wiegering
{"title":"Molecular Profiling of Low-Grade Appendiceal Mucinous Neoplasms (LAMN)","authors":"Julia Doll,&nbsp;Katja Maurus,&nbsp;Franziska Köhler,&nbsp;Niels Matthes,&nbsp;Johan F. Lock,&nbsp;Christoph-Thomas Germer,&nbsp;Andreas Rosenwald,&nbsp;Armin Wiegering","doi":"10.1002/gcc.23270","DOIUrl":"https://doi.org/10.1002/gcc.23270","url":null,"abstract":"<p>Low-grade appendiceal mucinous neoplasia (LAMN) represents a relatively rare tumor of the appendix typically diagnosed incidentally through appendectomy for acute appendicitis. In cases where perforation occurs, mucinous content may disseminate into the abdominal cavity, leading to the development of pseudomyxoma peritonei (PMP). The primary objective of this study was to elucidate the molecular characteristics associated with various stages of LAMN and PMP. DNA was extracted from LAMN, primary PMPs, recurrent PMPs, and adenocarcinomas originating from LAMN. The subsequent analysis involved the examination of mutational hotspot regions within 50 cancer-related genes, covering over 2800 COSMIC mutations, utilizing amplicon-based next-generation sequencing (NGS). Our findings revealed activating somatic mutations within the MAPK-signaling pathway across all tumors examined. Specifically, 98.1% of cases showed mutations in <i>KRAS</i>, while one tumor harbored a <i>BRAF</i> mutation. Additionally, <i>GNAS</i> mutations were identified in 55.8% of tumors, with no significant difference observed between LAMN and PMP. While LAMN rarely displayed additional mutations, 42% of primary PMPs and 60% of recurrent PMPs showed additional mutations. Notably, both adenocarcinomas originating from LAMN showed mutations within <i>TP53</i>. Furthermore, 7.7% (4/52) of cases exhibited a potentially targetable <i>KRAS</i> G12C mutation. In four patients, NGS analysis was performed on both primary PMP and recurrent PMP/adenocarcinoma samples. While mutations in <i>KRAS</i> and <i>GNAS</i> were detected in almost all samples, 50% of recurrent cases displayed an additional <i>SMAD4</i> mutation, suggesting a notable alteration during disease progression. Our findings indicate two key points: First, mutations within the MAPK pathway, particularly in <i>KRAS</i>, are evident across all tumors, along with a high frequency of <i>GNAS</i> mutations. Second, progression toward PMP or adenocarcinoma is associated with an accumulation of additional mutations within common oncogenic pathways.</p>","PeriodicalId":12700,"journal":{"name":"Genes, Chromosomes & Cancer","volume":"63 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gcc.23270","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142435482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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