Applied Immunohistochemistry & Molecular Morphology最新文献_第4页

Immunohistochemical Expression of SATB2 in Malignant Melanomas. 恶性黑色素瘤中 SATB2 的免疫组化表达

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-11-01 Epub Date: 2024-10-10 DOI: 10.1097/PAI.0000000000001229

Rasmus Røge, Birgit Truumees, Søren Nielsen

引用次数: 0

Immunohistochemistry in the Differential Diagnosis of Triple Negative Breast Carcinoma and High-grade Serous Carcinoma: Old and New Markers. 免疫组化在三阴性乳腺癌和高级别浆液性癌鉴别诊断中的应用：新旧标记物。

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-11-01 Epub Date: 2024-11-07 DOI: 10.1097/PAI.0000000000001232

Pragya Virendrakumar Jain, Mariel Molina, Michelle Moh, Erin Bishop, Janet S Rader, Julie M Jorns

{"title":"Immunohistochemistry in the Differential Diagnosis of Triple Negative Breast Carcinoma and High-grade Serous Carcinoma: Old and New Markers.","authors":"Pragya Virendrakumar Jain, Mariel Molina, Michelle Moh, Erin Bishop, Janet S Rader, Julie M Jorns","doi":"10.1097/PAI.0000000000001232","DOIUrl":"10.1097/PAI.0000000000001232","url":null,"abstract":"Distinction of metastasis to the breast from a breast primary, particularly high-grade triple-negative breast cancer (TNBC), can be challenging due to nonspecific morphology and immunohistochemical (IHC) profiles. Among metastases to the breast, high-grade serous carcinoma (HGSC) of müllerian origin is most likely to be misdiagnosed as TNBC. We assessed breast and müllerian markers on TNBC and HGSC, including keratin 7, keratin 20, GATA3, GCDFP15, mammaglobin, p53, PAX8 (MRQ50 and BC12 clones), TRPS1, SOX10, and WT1. Of 151 TNBC cases, TRPS1 had the highest sensitivity, showing expression in 149 (98.7%) cases, followed by SOX10 (110/151; 72.8%), GATA3 (102/151; 67.5%), GCDFP15 (29/151; 19.2%), and mammaglobin (27/151; 17.9%). PAX8 positivity was seen in 40.4% (61/151) of TNBC via the MRQ50 clone but was negative in all via the BC12 clone. Of 185 HGSC cases, PAX8 via the MRQ50 clone was the most sensitive (179/185; 96.8%), followed by WT1 (171/185; 92.4%) and PAX8 via the BC12 clone (164/185; 88.6%). In addition, TRPS1 positivity was seen in 75 HGSC cases (40.5%). Aberrant p53 patterns were seen in 64.9% (98/151) of TNBC and 94.1% (174/185) of HGSC. TRPS1 positivity in HGSC and PAX8 positivity via the MRQ50 clone in TNBC represent potential pitfalls in assessing high-grade carcinoma for which the differential diagnosis includes TNBC and HGSC. However, with this knowledge, utilization of a panel of breast and müllerian markers, including preferential use of the PAX8 BC12 clone, can facilitate accurate diagnosis.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":"32 10","pages":"456-461"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142591726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Expression of B7-H3 and B7-H4 in Gastric Gastrointestinal Stromal Tumors. 胃肠道间质瘤中 B7-H3 和 B7-H4 的表达

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-11-01 Epub Date: 2024-10-02 DOI: 10.1097/PAI.0000000000001227

Kunio Mochizuki, Naoki Oishi, Ippei Tahara, Tomohiro Inoue, Tetsuo Kondo

{"title":"Expression of B7-H3 and B7-H4 in Gastric Gastrointestinal Stromal Tumors.","authors":"Kunio Mochizuki, Naoki Oishi, Ippei Tahara, Tomohiro Inoue, Tetsuo Kondo","doi":"10.1097/PAI.0000000000001227","DOIUrl":"10.1097/PAI.0000000000001227","url":null,"abstract":"Gastric gastrointestinal stromal tumors (GISTs) are mesenchymal neoplasms with variable behavior characterized by differentiation toward the interstitial cells of Cajal occurring anywhere in the gastrointestinal stromal tract. The management of GIST was revolutionized by the introduction of imatinib, a KIT inhibitor, which has become the standard first-line treatment for metastatic GIST. However, despite a clinical benefit rate of 80%, the majority of patients with GIST experience disease progression after 2 to 3 years of imatinib therapy. This shows the need for novel treatment approaches for imatinib refractory GISTs. The checkpoint proteins B7-H3 and B7-H4 inhibit the activation and function of T cells by potently suppressing the proliferation, cytokine production, and cytotoxicity of activated T cells, which is a mechanism for immune escape. This study aims to clarify B7-H3 and B7-H4 expression in gastric GISTs using immunohistochemistry and reverse transcription polymerase chain reaction (RT-PCR). We confirmed B7-H3 expression (H-score ≥50 points) in 92% and B7-H4 expression in 0% of GIST samples. We examined B7-H3 mRNA expression in 3 representative GIST samples, each having their respective immunostained areas detected by RT-PCR. B7-H3 is expressed at a particularly high rate in GISTs. This suggests that B7-H3 might operate as part of an immune checkpoint in GISTs.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":" ","pages":"484-487"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142373317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Modified Bleaching Method for Multiplex Immunofluorescence Staining of FFPE Tissue Sections. 用于 FFPE 组织切片多重免疫荧光染色的改良漂白法

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-11-01 Epub Date: 2024-10-07 DOI: 10.1097/PAI.0000000000001228

Dan Wang, Alison Cheung, Gordon E Mawdsley, Kela Liu, Yulia Yerofeyeva, Kelsie L Thu, Ju-Yoon Yoon, Martin J Yaffe

{"title":"A Modified Bleaching Method for Multiplex Immunofluorescence Staining of FFPE Tissue Sections.","authors":"Dan Wang, Alison Cheung, Gordon E Mawdsley, Kela Liu, Yulia Yerofeyeva, Kelsie L Thu, Ju-Yoon Yoon, Martin J Yaffe","doi":"10.1097/PAI.0000000000001228","DOIUrl":"10.1097/PAI.0000000000001228","url":null,"abstract":"Multiplex immunofluorescence (mIF) staining plays an important role in profiling biomarkers and allows investigation of co-relationships between multiple biomarkers in the same tissue section. The Cell DIVE mIF platform (Leica Microsystems) employs an alkaline solution of hydrogen peroxide as a fluorophore inactivation reagent in the sequential staining, imaging, and bleaching protocol for use on FFPE sections. Suboptimal bleaching efficiency, degradation of tissue structure, and loss of antigen immunogenicity occasionally are encountered with the standard bleaching process. To overcome these impediments, we adopted a modified photochemical bleaching method, which utilizes an intense LED light exposure concurrent with the application of hydrogen peroxide. Repeated stain/bleach rounds with different antibodies were performed on breast tissue and other tissue sections. Residual signal after conventional bleaching and the modified technique were compared and tissue integrity and antigen immunogenicity were assessed. The modified technique effectively eliminates fluorescence signal from previous staining rounds and produces consistent results for multiple rounds of staining and imaging. With the modified method, photochemical treatments did not destroy tissue sub-cellular contents, and the tissue antigenicity was well preserved during the entire mIF process. Overall processing time was reduced from 36 to 30 hours in an mIF procedure with 8 rounds. With the conventional method, tissue quality was highly degraded after 8 rounds. The new technique allows reduced turn-around time, provides reliable fluorophore removal in mIF with excellent maintenance of tissue integrity, facilitating studies of the co-localization of multiple biomarkers in tissues of interest.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":" ","pages":"447-452"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142382131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Expression and Clinical Significance of Nuclear Phosphoglucomutase-1 in Hepatocellular Carcinoma. 核磷葡聚糖酶-1 在肝细胞癌中的表达和临床意义

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-11-01 Epub Date: 2024-09-20 DOI: 10.1097/PAI.0000000000001225

Yechen Xia, Yan An, Riming Jin, Wentao Huang, Guang-Zhi Jin, Jing Xu

{"title":"Expression and Clinical Significance of Nuclear Phosphoglucomutase-1 in Hepatocellular Carcinoma.","authors":"Yechen Xia, Yan An, Riming Jin, Wentao Huang, Guang-Zhi Jin, Jing Xu","doi":"10.1097/PAI.0000000000001225","DOIUrl":"10.1097/PAI.0000000000001225","url":null,"abstract":"This study aimed to evaluate the predictive values of phosphoglucomutase-1 (PGM1) expression for prognosis in patients with hepatocellular carcinoma (HCC). PGM1 expression was assessed by immunohistochemistry in tissue microarrays. The relationship of PGM1 expression level with pathologic parameters and prognosis values was respectively analyzed by χ 2 test and Cox regression. The accuracy of independent risk factors in predicting prognosis was calculated by receiver operating characteristic curve. HCC patient-derived xenograft models were performed to evaluate the nuclear PGM1 antitumor effect. The results showed that PGM1 expression was low in HCC tissues. Nuclear PGM1 was an independent prognostic factor for overall survival and time to recurrence. Cox regression showed that nuclear PGM1, serum α-fetoprotein, liver cirrhosis, and TNM staging stage were independent risk predictors for HCC. Receiver operating characteristic curve demonstrated that combination of independent predictors had better prognostic value than TNM staging alone. Moreover, patient-derived xenograft models showed antitumor effect of nuclear PGM1. We found that low expression of nuclear PGM1 was detected in HCC tissues and associated with poor prognostic. Nuclear PGM1 was an independent prognostic factor in patients with HCC. Furthermore, nuclear PGM1 combining other independent risk factors showed a better prognostic value. Nuclear PGM1 was a useful prognostic biomarker for patients with HCC.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":" ","pages":"476-483"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142330578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Comparing the Sensitivity of HER2 Epitope Detection of HercepTest mAb pharmDx (Dako Omnis, GE001) and Ventana PATHWAY Anti-HER-2/neu (4B5) Using IHC Calibrators. 使用 IHC 校准物比较 HercepTest mAb pharmDx（Dako Omnis，GE001）和 Ventana PATHWAY Anti-HER-2/neu (4B5) 检测 HER2 表位的灵敏度。

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-11-01 Epub Date: 2024-10-24 DOI: 10.1097/PAI.0000000000001230

Frederik Aidt, Maria Sierra, Karin Salomon, Ghislain Noumsi

引用次数: 0

A Pilot Study on BRCA1/2 and PI3K Mutations Across Subtypes of Triple Negative Breast Cancer in North Indian Population. 北印度人群三阴性乳腺癌亚型中 BRCA1/2 和 PI3K 基因突变的试点研究

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-11-01 Epub Date: 2024-11-07 DOI: 10.1097/PAI.0000000000001231

Parul Gupta, Tamanna Thakur, Anjali Chadda, Santosh Irinike, Siddhant Khare, Amanjit Bal

{"title":"A Pilot Study on BRCA1/2 and PI3K Mutations Across Subtypes of Triple Negative Breast Cancer in North Indian Population.","authors":"Parul Gupta, Tamanna Thakur, Anjali Chadda, Santosh Irinike, Siddhant Khare, Amanjit Bal","doi":"10.1097/PAI.0000000000001231","DOIUrl":"10.1097/PAI.0000000000001231","url":null,"abstract":"BRCA1/2 are tumor suppressor genes which regulate the DNA repair mechanism. Mutations in BRCA1/2 may increase the risk of breast cancer in patients. In the present study frequency of BRCA1/2 mutations in triple negative breast cancer (TNBC) patients was assessed and correlated with molecular subtypes of TNBC. Blood samples from 65 confirmed cases of TNBC were collected. DNA was isolated from whole blood and libraries were prepared using a BRCA1/2 custom panel. Sequencing was done on Ion torrent S5 sequencer and ion reporter was used for data analysis. Further molecular subtyping of mutation positive TNBC cases was done using immunohistochemistry markers CK5/6; CK4/14; Vimentin and E-Cadherin and androgen receptor (AR) using tissue microarray. Twenty five of 65 patients had heterozygous pathogenic mutations, alterations with conflicting interpretation of pathogenicity, variants of uncertain significance and variants of unknown significance. Nine patients had pathogenic mutation in BRCA 1 gene only and 2 patients had pathogenic mutations in BRCA2 gene. Two patients were transheterozygous for BRCA mutations, that is, had pathogenic mutations in both BRCA1/2 genes simultaneously and 5 were compound heterozygous (involving BRCA2 gene in all the cases). Prevalent subtypes among BRCA positive cases were unclassified subtype (n=4, 33%), Basal like (n=5, 41%), and mesenchymal subtype (n=3, 25%). None of the LAR subtype showed BRCA1/2 mutations. The present study observed that the BRCA1 mutation is more frequent than BRCA2 mutation in TNBC. BRCA1/2 mutations do not correspond to BRCAness or basal phenotype. Considering high incidence of breast cancer and lack of correlation of basal morphology with BRCA1/2 mutation, the molecular methods should be used for screening for BRCA1/2 mutations. This will not only help in familial screening but also in deciding targeted therapy with PARP (poly-ADP ribose polymerase) inhibitors.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":"32 10","pages":"462-468"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142591546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Concordance of PD-L1 Expression in Metastatic Triple-negative Breast Cancer Between the 22C3 and E1L3N Antibodies Using Combined Positive Scoring. 22C3 和 E1L3N 抗体采用联合阳性评分法检测转移性三阴性乳腺癌中 PD-L1 表达的一致性

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-10-01 Epub Date: 2024-09-20 DOI: 10.1097/PAI.0000000000001223

Timothy K Erick, Susan C Lester, Ana C Garrido-Castro, Melissa Hughes, Olivia Cunningham, Nancy U Lin, Elizabeth A Mittendorf, Sara M Tolaney, Jane E Brock

{"title":"Concordance of PD-L1 Expression in Metastatic Triple-negative Breast Cancer Between the 22C3 and E1L3N Antibodies Using Combined Positive Scoring.","authors":"Timothy K Erick, Susan C Lester, Ana C Garrido-Castro, Melissa Hughes, Olivia Cunningham, Nancy U Lin, Elizabeth A Mittendorf, Sara M Tolaney, Jane E Brock","doi":"10.1097/PAI.0000000000001223","DOIUrl":"10.1097/PAI.0000000000001223","url":null,"abstract":"For patients with metastatic triple-negative breast cancer (TNBC), treatment with pembrolizumab is dependent on the accurate determination of programmed death ligand 1 (PD-L1) expression using immunohistochemistry (IHC). This study evaluated the interobserver concordance in assessing PD-L1 expression on TNBC samples using the commercial 22C3 IHC assay and an in-house assay based on the E1L3N antibody. Concordance between the 22C3 and the E1L3N IHC assays was evaluated on TNBC samples read by a commercial laboratory and a Brigham and Women's Hospital breast pathologist (BWH reader). Each slide was given a PD-L1 combined positive score (CPS) and was considered PD-L1 positive or negative based on the CPS cutoff of 10. Interobserver concordance for the assays was also evaluated on a subset of samples between 2 and 3 independent readers. On 71 samples, 2 independent readers (1 BWH reader and commercial laboratory) using E1L3N and 22C3, respectively, reached agreement on PD-L1 status (positive/negative) on 64 samples (90.1%). Using 22C3, 2 independent readers reached agreement on PD-L1 status on 30 of 36 samples (83.3%), and 3 independent readers reached agreement on 16 of 27 samples (59.3%). Using E1L3N, 2 BWH readers reached agreement on PD-L1 status on 18 of 27 samples (66.7%). Three BWH readers reached an agreement on 2 of 12 of the most challenging samples (16.7%). In conclusion, concordance between E1L3N and 22C3 testing using CPS for PD-L1 in metastatic TNBC was >90%. However, certain cases were challenging to agree upon using current threshold criteria, highlighting the need for more standardized evidence-based methods to assess PD-L1 expression.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":" ","pages":"417-424"},"PeriodicalIF":1.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142330577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Automated Standardization of Melanin Bleaching Procedures of Heavily Pigmented Melanocytic Lesions With Low-Concentration Hydrogen Peroxide on an Automated Platform. 在自动化平台上使用低浓度过氧化氢对严重色素沉着的黑色素细胞病变进行黑色素漂白程序的自动化标准化。

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-10-01 Epub Date: 2024-08-12 DOI: 10.1097/PAI.0000000000001217

Chih-Ching Yeh, Yi-Jing Li, Jang-Shian Liang, Jia-Bin Liao

{"title":"Automated Standardization of Melanin Bleaching Procedures of Heavily Pigmented Melanocytic Lesions With Low-Concentration Hydrogen Peroxide on an Automated Platform.","authors":"Chih-Ching Yeh, Yi-Jing Li, Jang-Shian Liang, Jia-Bin Liao","doi":"10.1097/PAI.0000000000001217","DOIUrl":"10.1097/PAI.0000000000001217","url":null,"abstract":"Melanin is a natural pigment in the human body that is primarily found in the skin and hair. It protects the skin from damage by ultraviolet radiation. Although this pigment plays a crucial role in protecting the human body, it represents a challenge for pathologists to evaluate highly pigmented tissue samples from melanoma or pigmented skin lesions. Abundant melanin may obscure tissue morphology, which makes it very difficult for pathologists to make a differential diagnosis. Melanin pigment is brown-to-black and granular, and its distribution is often uneven in tissues. The presence of these pigments can complicate the analysis of immunohistochemistry (IHC) for 2 reasons. First, they have a direct physical masking effect on antigen-antibody interactions. Second, 3,3-diaminobenzidine, the most commonly used chromogen, has a brown color that is difficult to distinguish from melanin pigment. Therefore, melanin bleaching has become a crucial step in handling pigmented melanocytic lesions. Bleaching techniques aid pathologists in histopathologic examination of melanin-rich tissue. In this study, we integrated melanin bleaching and IHC on an automated IHC platform to set up a rapid and fully automated procedure. Bleaching steps were performed before antigen retrieval. Samples were treated with 1% hydrogen peroxide solution in Tris-HCl buffer (pH 10) at 80°C for 8 minutes, achieving optimal conditions for melanin bleaching while preserving tissue morphology and antigenicity. This rapid, effective, fully automated, and standardized workflow can be applied to routine staining procedures in clinical laboratories, thereby improving the quality of pathological diagnosis.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":"32 9","pages":"436-441"},"PeriodicalIF":1.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Use of HSP105 in the Differential Diagnosis of Basaloid Skin Tumors: A Study of 73 Cases. HSP105 在基底样皮肤肿瘤鉴别诊断中的应用：73 个病例的研究

IF 1.3 4区医学

Applied Immunohistochemistry & Molecular Morphology Pub Date : 2024-10-01 Epub Date: 2024-10-08 DOI: 10.1097/PAI.0000000000001224

Li-Jia Deng, Kai-Yi Zhou, Qin-Xiao Wang, Si-Yu Luo, Sheng Fang

{"title":"Use of HSP105 in the Differential Diagnosis of Basaloid Skin Tumors: A Study of 73 Cases.","authors":"Li-Jia Deng, Kai-Yi Zhou, Qin-Xiao Wang, Si-Yu Luo, Sheng Fang","doi":"10.1097/PAI.0000000000001224","DOIUrl":"10.1097/PAI.0000000000001224","url":null,"abstract":"Background: Basaloid skin tumors include subtypes of basal cell carcinoma (BCC) and the basaloid variant of squamous cell carcinoma (SCC). Due to their similarity in pathology and clinical presentation, their diagnosis is not straightforward. The aim of this study was to analyze the immunohistochemical expression of HSP105 in basaloid skin tumors, which include BCC, basosquamous carcinoma (BSC), metatypical basal cell carcinoma (MBCC), basaloid squamous cell carcinoma (BSCC), BCC with squamous differentiation as well as conventional SCC.Methods: This retrospective study included 17 cases of BCC, 11 cases of BSC, 8 instances of MBCC, 10 cases of BCC with squamous differentiation, 8 cases of BSCC, and 19 cases of SCC. Their clinical characteristics were summarized, and the paraffin blocks of tumor biopsy specimens were collected for HSP105 immunostaining.Results: In contrast to the BCC group, which stained predominantly negative, SCC stained diffusely positive for HSP105. BSCs showed some areas of HSP105 positivity with a transitional expression signature. HSP105 was only weakly positive in a few cases of MBCC. Although BSCC was stained positive for HSP105, the HSCORE was significantly lower than that of the classic SCC. In BCC with squamous differentiation, focal staining for HSP105 was only seen in the area of squamous differentiation.Conclusion: There was a difference in immunohistochemical staining of HSP105 in basaloid skin tumors which helps in differential diagnosis. Differentiation between BCC, SCC, BSCC, MBCC, and BCC with squamous differentiation can be aided by immunohistochemistry using HSP105.","PeriodicalId":48952,"journal":{"name":"Applied Immunohistochemistry & Molecular Morphology","volume":"32 9","pages":"401-406"},"PeriodicalIF":1.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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