Journal of Clinical Pathology最新文献

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EWSR1: the promiscuous king of mesenchymal neoplasia. EWSR1:间充质肿瘤的杂交之王。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2023-208867
Emily Anne Towery, David James Papke
{"title":"<i>EWSR1</i>: the promiscuous king of mesenchymal neoplasia.","authors":"Emily Anne Towery, David James Papke","doi":"10.1136/jcp-2023-208867","DOIUrl":"10.1136/jcp-2023-208867","url":null,"abstract":"<p><p><i>EWSR1</i> is the most commonly rearranged gene in mesenchymal neoplasia, and its myriad chimeric oncoproteins drive widely disparate neoplasms. Here, we survey selected <i>EWSR1</i> rearrangements, including well-described <i>EWSR1</i> fusions with CREB family members, <i>ATF1</i> and <i>CREB1</i>, as well as fusions in emerging entities such as mesenchymal neoplasms with <i>EWSR1::PATZ1</i> and <i>EWSR1::NFATC2</i> fusions. We also discuss recent data demonstrating the imperfect specificity of <i>EWSR1::WT1</i> and, possibly, <i>EWSR1::FLI1</i> fusions.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"721-725"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142107907","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
Cross-sectional study to evaluate the utility of elastic tissue staining in primary cicatricial alopecia. 横断面研究,评估弹性组织染色在原发性卡他性脱发中的实用性。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2022-208745
Tejas Vishwanath, Rachita Dhurat
{"title":"Cross-sectional study to evaluate the utility of elastic tissue staining in primary cicatricial alopecia.","authors":"Tejas Vishwanath, Rachita Dhurat","doi":"10.1136/jcp-2022-208745","DOIUrl":"10.1136/jcp-2022-208745","url":null,"abstract":"<p><strong>Background and aims: </strong>Diagnosing end-stage primary cicatricial alopecia (PCA) on routine histology is challenging since the major diagnostic feature (inflammatory infiltrate) may be minimal or absent. This study aimed to assess various staining patterns and diagnostic utility of elastic tissue staining by Verhoeff-Van Gieson (VVG) method and trichoscopy in PCA.</p><p><strong>Study design: </strong>Cross-sectional study.</p><p><strong>Methods: </strong>Fifty-three patients clinically diagnosed with PCA underwent biopsy and trichoscopy in this cross-sectional study. Clinically active edge, if present, was biopsied. Twenty serial tissue sections were stained using H&E and VVG stain. Clinicopathological diagnoses were lichen planopilaris (LPP), discoid lupus erythematosus (DLE), folliculitis decalvans and unclassified PCA (UPCA) in 30 (56.6%), 11 (20.75%), 1 (1.9%) and 11 (20.75%) patients, respectively. Utility of VVG stain was ascertained considering clincopathological correlation (CPC) as the reference standard. Association of characteristic trichoscopic and VVG staining patterns was ascertained.</p><p><strong>Results: </strong>Diagnostic definition was achieved on VVG staining in 19/30 sections of LPP (wedge-shaped pattern) with 63.33% sensitivity; 7/11 cases of DLE (absent upper and mid dermal elastic fibres) with 63.64% sensitivity and 7/11 cases of UPCA (wedge-shaped pattern-3/7; recoil pattern-4/7). Routine histology suggested diagnosis only in 13/53 sections (24.52%). However, diagnosis on VVG staining corresponded with diagnosis on CPC in 33/53 cases (62.3%). Comparison of H&E versus VVG stain both overall and in the LPP and UPCA cohorts proved utility of VVG staining using Fisher's exact test (p<0.05). Statistical significance was also noted when trichoscopy was correlated with patterns on VVG staining (p<0.05).</p><p><strong>Conclusion: </strong>Increased diagnostic yield is noted with trichoscopy and VVG stain in PCA especially when routine histopathology is non-diagnostic.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"737-742"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9957419","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
Correlation of low numbers of intratumoral FOXP3+ cells with worse progression-free survival in angioimmunoblastic T cell lymphoma. 血管免疫母细胞性T细胞淋巴瘤瘤内FOXP3+细胞数量较少与无进展生存期较差的相关性。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2023-208932
Hung-Lin Liu, Shao-Wen Weng, Chih-Chi Chou, Huey-Ling You, Ming-Chung Wang, Ming-Chun Ma, Wan-Ting Huang
{"title":"Correlation of low numbers of intratumoral FOXP3+ cells with worse progression-free survival in angioimmunoblastic T cell lymphoma.","authors":"Hung-Lin Liu, Shao-Wen Weng, Chih-Chi Chou, Huey-Ling You, Ming-Chung Wang, Ming-Chun Ma, Wan-Ting Huang","doi":"10.1136/jcp-2023-208932","DOIUrl":"10.1136/jcp-2023-208932","url":null,"abstract":"<p><strong>Aims: </strong>Angioimmunoblastic T cell lymphoma (AITL) is a T cell lymphoma with aberrant immune activity. It is characterised by inflammatory and immune reactions. However, the impact of regulatory T (Treg) cells on AITL remains unclear.</p><p><strong>Methods: </strong>We retrospectively collected 46 AITL cases and performed immunohistochemical analysis of forkhead box P3 (FOXP3) expression. The number of immunostained FOXP3 cells was determined using a digital pathology system with whole-slide imaging. The average number of FOXP3+ cells per high-power field (HPF) was determined by randomly counting 20 HPFs. AITL cases were categorised into high-expression and low-expression groups based on the median count of FOXP3+ cells in all analysed samples. The relationship between FOXP3 expression and clinicopathological features was assessed.</p><p><strong>Results: </strong>Among the studied patients, 14 (30.4%) were females and 32 (69.6%) were males, and the median age at diagnosis was 64.1 years. The median expression of FOXP3 was 84.9 positive cells/HPF. FOXP3 expression negatively correlated with Epstein-Barr virus-encoded small RNA positivity in tumour (p=0.041). The patients with low FOXP3 expression presented with aggressive clinical behaviour, including advance-staged diseases (p=0.043), splenomegaly (p=0.008), B symptoms (p=0.019) and extranodal involvement (p=0.019). The neutrophil-to-lymphocyte ratio was higher in the patients with low FOXP3 expression, compared with those with high FOXP3 expression. Low FOXP3 expression had an adverse effect on progression-free survival (PFS, p=0.033), and increased the risk of recurrence 2.320-fold (HR 2.320 (95% CI 1.109 to 4.856); p=0.025).</p><p><strong>Conclusions: </strong>Patients with AITL with low FOXP3 expression tend to have aggressive clinical presentation and shortened PFS. These findings may help with risk stratification and determination of new treatment strategy.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"743-750"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10057607","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
Pitfalls in the diagnosis and management of acid-base disorders in humans: a laboratory medicine perspective. 人类酸碱紊乱诊断和管理中的误区:实验室医学的视角。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2024-209423
Henry Carlton, Kate E Shipman
{"title":"Pitfalls in the diagnosis and management of acid-base disorders in humans: a laboratory medicine perspective.","authors":"Henry Carlton, Kate E Shipman","doi":"10.1136/jcp-2024-209423","DOIUrl":"10.1136/jcp-2024-209423","url":null,"abstract":"<p><p>Diagnostic errors affect patient management, and as blood gas analysis is mainly performed without the laboratory, users must be aware of the potential pitfalls. The aim was to provide a summary of common issues users should be aware of.A narrative review was performed using online databases such as PubMed, Google Scholar and reference lists of identified papers. Language was limited to English.Errors can be pre-analytical, analytical or post-analytical. Samples should be analysed within 15 min and kept at room temperature and taken at least 15-30 min after changes to inspired oxygen and ventilator settings, for accurate oxygen measurement. Plastic syringes are more oxygen permeable if chilled. Currently, analysers run arterial, venous, capillary and intraosseous samples, but variations in reference intervals may not be appreciated or reported. Analytical issues can arise from interference secondary to drugs, such as spurious hyperchloraemia with salicylate and hyperlactataemia with ethylene glycol, or pathology, such as spurious hypoxaemia with leucocytosis and alkalosis in hypoalbuminaemia. Interpretation is complicated by result adjustment, for example, temperature (alpha-stat adjustment may overestimate partial pressure of carbon dioxide (pCO<sub>2</sub>) in hypothermia, for example), and inappropriate reference intervals, for example, in pregnancy bicarbonate, and pCO<sub>2</sub> ranges should be lowered.Lack of appreciation for patient-specific and circumstance-specific reference intervals, including extremes of age and altitude, and transformation of measurements to standard conditions can lead to inappropriate assumptions. It is vitally important for users to optimise specimen collection, appreciate the analytical methods and understand when reference intervals are applicable to their specimen type, clinical question or patient.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"772-778"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141723667","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
PAX5 and CD70 are expressed in thymic carcinoma but not in atypical thymoma (WHO type B3 thymoma): an immunohistochemical analysis of 60 cases. PAX5 和 CD70 在胸腺癌中表达,而在非典型胸腺瘤(WHO B3 型胸腺瘤)中不表达:对 60 例病例的免疫组化分析。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2023-209070
Annikka Weissferdt, Cesar Moran
{"title":"PAX5 and CD70 are expressed in thymic carcinoma but not in atypical thymoma (WHO type B3 thymoma): an immunohistochemical analysis of 60 cases.","authors":"Annikka Weissferdt, Cesar Moran","doi":"10.1136/jcp-2023-209070","DOIUrl":"10.1136/jcp-2023-209070","url":null,"abstract":"<p><strong>Aims: </strong>Thymic carcinoma and atypical thymoma (WHO type B3 thymoma) are unusual tumours the separation of which may be challenging in small biopsies. Both tumours consist of epithelioid tumour cells that share similar morphology and immunophenotype with conventional markers. Therefore, additional antibodies are needed to differentiate between these tumours.</p><p><strong>Methods: </strong>For this purpose, a panel of immunohistochemical stains including PAX2, PAX5, PAX8 (all monoclonal) and CD70 was used on whole tumour sections of 30 thymic carcinomas and 30 atypical thymomas to determine the expression pattern of these antibodies. In addition, all tumours were stained with markers that are well known to be expressed in both tumours, including pancytokeratin and cytokeratin 5/6. The percentage of positive tumour cells as well as the intensity of staining were evaluated and scored.</p><p><strong>Results: </strong>PAX5 stained close to 70% of thymic carcinomas while all atypical thymomas were negative for this marker. CD70 was expressed in 18 thymic carcinomas (60%) and in 1 case of atypical thymoma (3%). On the other hand, monoclonal PAX8 was negative in all cases while PAX2 was positive in a single thymic carcinoma. Of the established stains, pancytokeratin and cytokeratin 5/6 were equally positive in both tumours.</p><p><strong>Conclusions: </strong>Among the markers explored, only PAX5 and CD70 appear to be differentially expressed and are predominantly restricted to thymic carcinomas. Therefore, in small biopsy specimens and in resections in which the morphological features remain equivocal, application of these particular stains may facilitate separation of thymic carcinoma and atypical thymoma.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"761-765"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10203634","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
Molecular and haematological characterisation of haemolytic anaemia associated with biallelic KLF1 mutations: a case series. 与双侧 KLF1 基因突变相关的溶血性贫血的分子和血液学特征:一个病例系列。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2023-208945
Kritsada Singha, Nattiya Teawtrakul, Goonnapa Fucharoen, Supan Fucharoen
{"title":"Molecular and haematological characterisation of haemolytic anaemia associated with biallelic KLF1 mutations: a case series.","authors":"Kritsada Singha, Nattiya Teawtrakul, Goonnapa Fucharoen, Supan Fucharoen","doi":"10.1136/jcp-2023-208945","DOIUrl":"10.1136/jcp-2023-208945","url":null,"abstract":"<p><strong>Aims: </strong>Krüppel-like factor 1 (KLF1) is an erythroid-specific transcription factor playing an important role in erythropoiesis and haemoglobin (Hb) switching. Biallelic KLF1 mutations can cause haemolytic anaemia with thalassaemia-like syndromes but are rarely reported. We explore the KLF1 mutations in Thai subjects with unexplainable haemolytic anaemia.</p><p><strong>Methods: </strong>The study was done on 57 subjects presented with haemolytic anaemia and elevated Hb F without β-thalassaemia diseases. Hb analysis was performed using capillary electrophoresis. Analyses of α-thalassaemia, β-thalassaemia and KLF1 genes were performed using PCR-based methods and DNA sequencing.</p><p><strong>Results: </strong>Thirteen subjects with compound heterozygous for a known and five new genetic KLF1 interactions were identified, including KLF1:c.519_525dupCGGCGCC/c.892G>C with class 3/2 (n=8), and each subject with new genetic interaction, including KLF1:c.-154C>T;643C>T/c.983G>A with class 3/2, KLF1:c.-154C>T;643C>T/c.809C>G with class 3/2, KLF1:c892G>C/c.983G>A with class 2/2, KLF1:c.892G>C/c.1001C>G with class 2/2 and KLF1:c.1001C>G/c.1003G>A with class 2/2. Most of them had anaemia with Hb levels ranging from 45 to 110 g/L, hypochromic microcytosis, aniso-poikilocytosis, increased Hb F levels (17.9%-47.4%), small amounts of Hb Bart's, regular blood transfusion, hyperbilirubinaemia, increased serum ferritin and nucleated red blood cell.</p><p><strong>Conclusions: </strong>Biallelic KLF1 mutations associated with anaemia may not be uncommon in Thailand. Characteristics of haemolytic anaemia, abnormal red cell morphology with nucleated red blood cells and elevated Hb F, and presenting small amounts of Hb Bart's without thalassaemia diseases are useful markers to further investigation of the KLF1 gene.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"783-789"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9888163","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
Molecular diagnosis of tuberous sclerosis complex in fetuses and infants: an institutional case series. 胎儿和婴儿结节性硬化症复合体的分子诊断:机构病例系列。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2023-208935
Anna S Bolshakova, Dmitry N Maslennikov, Jekaterina Shubina, Andrey A Bystritskiy, Ekaterina R Tolmacheva, Irina S Mukosey, Taisiya O Kochetkova, Grigory S Vasiliev, Ekaterina E Atapina, Igor O Sadelov, Nadezhda V Zaretskaya, Ilya Yu Barkov, Dmitry N Degtyarev, Dmitry Yu Trofimov
{"title":"Molecular diagnosis of tuberous sclerosis complex in fetuses and infants: an institutional case series.","authors":"Anna S Bolshakova, Dmitry N Maslennikov, Jekaterina Shubina, Andrey A Bystritskiy, Ekaterina R Tolmacheva, Irina S Mukosey, Taisiya O Kochetkova, Grigory S Vasiliev, Ekaterina E Atapina, Igor O Sadelov, Nadezhda V Zaretskaya, Ilya Yu Barkov, Dmitry N Degtyarev, Dmitry Yu Trofimov","doi":"10.1136/jcp-2023-208935","DOIUrl":"10.1136/jcp-2023-208935","url":null,"abstract":"<p><strong>Objective: </strong>We describe the clinical and genetic characteristics of fetuses and infants diagnosed with tuberous sclerosis complex (TSC) in our centre, prenatally or neonatally, for a better understanding of the benefits of early screening.</p><p><strong>Methods: </strong>In this retrospective study, we analysed the data on one fetus and nine infants with a definitive TSC diagnosis by genetic criteria (five patients carrying <i>TSC1</i> variants and 5 patients carrying <i>TSC2</i> variants). We explored the differences between phenotypes of patients carrying <i>TSC1</i> and <i>TSC2</i> pathogenic variants.</p><p><strong>Results: </strong>The most common initial presenting features of TSC were cardiac rhabdomyomas (CRs) that were observed in nine out of ten patients. The most common postnatal features, besides CR, were presented with subependymal nodules-in five patients, and hypomelanotic macules-in four patients. In total, 10 variants causing TSC were detected in this study, including 5 novel variants. We demonstrated that patients with <i>TSC2</i> variants had earlier onset and more severe clinical manifestations compared with patients carrying <i>TSC1</i> variants.</p><p><strong>Conclusion: </strong>Early diagnosis of TSC improves genetic counselling and perinatal management.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"756-760"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9934829","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
Should a borderline negative HER2 result in a core biopsy of invasive carcinoma of the breast have HER2 assessment repeated in the excision specimen? 乳腺浸润性癌核心活检的 HER2 结果为边缘阴性,是否应在切除标本中重复进行 HER2 评估?
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2023-209091
Andrew H S Lee, Zsolt Hodi, Areeg Abbas, Peter Wencyk, Ian O Ellis, Emad Rakha
{"title":"Should a borderline negative HER2 result in a core biopsy of invasive carcinoma of the breast have HER2 assessment repeated in the excision specimen?","authors":"Andrew H S Lee, Zsolt Hodi, Areeg Abbas, Peter Wencyk, Ian O Ellis, Emad Rakha","doi":"10.1136/jcp-2023-209091","DOIUrl":"10.1136/jcp-2023-209091","url":null,"abstract":"<p><strong>Aim: </strong>The 2015 UK guidelines for HER2 assessment in breast cancer recommended repeat assessment if the core biopsy was scored as 2+ on HER2 immunohistochemistry (IHC) with borderline negative in situ hybridisation (ratio of number of HER2 to chromosome 17 centromere copies of 1.8-1.99). This case series aimed to assess the value of such repeat assessment in the surgical specimen, in particular the proportion that were HER2 positive.</p><p><strong>Methods: </strong>Details of biopsies with 2+ IHC and borderline negative in situ hybridisation were extracted from a database. The results of repeat HER2 testing in the surgical specimen for this cohort study were then obtained.</p><p><strong>Results: </strong>112 patients with no preoperative treatment had repeat assessment: 4 were 3+ and 16 were 2+ amplified. Of 14 with preoperative chemotherapy, 1 was 3+ and 4 were 2+ amplified. All the 2+ amplified carcinomas had a HER2 to chromosome 17 ratio less than 4, in 50% the ratio was between 2.0 and 2.2, and in 50% the HER2 copy number was less than 4.</p><p><strong>Conclusions: </strong>Repeat assessment yielded 4% 3+ results and 14% 2+ amplified carcinomas but with low level amplification. These results suggest that retesting of borderline negative HER2 cases should be optional and no longer mandatory.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"726-729"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10123961","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
PD-L1 protein expression in breast cancer. 乳腺癌中 PD-L1 蛋白的表达。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2023-208942
Sigurd A Saastad, Anette H Skjervold, Borgny Ytterhus, Monica Jernberg Engstrøm, Anna M Bofin
{"title":"PD-L1 protein expression in breast cancer.","authors":"Sigurd A Saastad, Anette H Skjervold, Borgny Ytterhus, Monica Jernberg Engstrøm, Anna M Bofin","doi":"10.1136/jcp-2023-208942","DOIUrl":"10.1136/jcp-2023-208942","url":null,"abstract":"<p><strong>Aims: </strong>The immune checkpoint marker, Programmed cell death-ligand 1 (PD-L1), is expressed by both cancer epithelial cells and tumour-infiltrating immune cells (TICs) thus constituting a potential target for immunotherapy. This is of particular interest in triple negative breast cancer. In this study, we assessed the prognostic value of PD-L1 expression in tumour epithelial cells and TICs in a series of patients with breast cancer with long-term follow-up, and associations between PD-L1 expression and histopathological type and grade, proliferation and molecular subtype.</p><p><strong>Methods: </strong>Using immunohistochemistry for PD-L1 in tissue microarrays, we assessed PD-L1 expression in 821 tumours. Expression of PD-L1 was assessed separately in the epithelial and stromal compartments and classified as <1%, ≥1% to <10% or ≥10% positive staining cells. We correlated PD-L1 expression in tumour epithelial cells and TICs with tumour characteristics using Pearson's χ<sup>2</sup> test, and prognosis by cumulative incidence of death from breast cancer and Cox regression analyses.</p><p><strong>Results: </strong>We found membranous staining in ≥1% of tumour epithelial cells in 53/821 cases (6.5%). Of these, 21 (2.6%) were ≥10%. Among TICs, staining (≥1%) was seen in 144/821 cases (17.6%). Of these, 62 were ≥10% (7.6%). PD-L1 was associated with high histopathological grade and proliferation, and the medullary and metaplastic patterns. In TICs, PD-L1 ≥1% found in 22/34 (34.4%) human epidermal growth factor receptor 2 type and 29/58 (50%) basal phenotype. An independent association between PD-L1 expression and prognosis was not observed.</p><p><strong>Conclusions: </strong>PD-L1 is expressed more frequently in TICs than tumour epithelial cells. Expression in TICs is associated with aggressive tumour characteristics and non-luminal tumours but not with prognosis.</p>","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"730-736"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9962622","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
How-and why-to fill up a surgical pathology requisition form. 如何以及为什么要填写外科病理申请表。
IF 2.5 4区 医学
Journal of Clinical Pathology Pub Date : 2024-10-20 DOI: 10.1136/jcp-2024-209477
Sanjay A Pai
{"title":"How-and why-to fill up a surgical pathology requisition form.","authors":"Sanjay A Pai","doi":"10.1136/jcp-2024-209477","DOIUrl":"10.1136/jcp-2024-209477","url":null,"abstract":"","PeriodicalId":15391,"journal":{"name":"Journal of Clinical Pathology","volume":" ","pages":"790-791"},"PeriodicalIF":2.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140059491","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
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