COVID-19 is an emerging, rapidly evolving situation. This site needs JavaScript to work properly. 2019 Mar;14(3):377-407. doi: 10.1016/j.jtho.2018.12.005. Loss of INI1/BAF47 protein, an indicator of malignant rhabdoid tumor, was observed. About PathologyOutlines.com. 4, 5 INI1 is localised on chromosome 22q and it had been analysed in tumours with … An autopsy revealed a soft, granular tumor that replaced the entire left pleura and had invaded to the diaphragm and lower lobe of the lung. doi: 10.1111/cpr.12791. Fifteen cases have been reported previously, all of which were combined with other types of MM. Therefore, MM with rhabdoid features was confirmed. 2015 Jul;123(7):618-28. doi: 10.1111/apm.12395. INI1 immunohistochemistry was performed to determine the utility of this method in assessing loss of INI1 expression in rhabdoid tumors. SMARCB1-deficient Tumors of Childhood: A Practical Guide. Mutations, deletions, and other somatic alterations in the tumor suppressor gene INI1 (hSNF5; SMARCB1), which encodes a subunit of the SWI/SNF chromatin remodeling complex, were first described in the malignant rhabdoid tumor of infancy. 10 SMARCB1/INI1 is … gh incidence of metastatic spread and a short patient survival. Epithelioid sarcoma (ES) is a rare soft tissue sarcoma first described by Enzinger1 in 1970. PMID: 20854059 [Indexed for MEDLINE] 2021 Jan;478(1):59-72. doi: 10.1007/s00428-021-03031-7. Kidney cyst pathology outlines. Malignant rhabdoid tumors are high-grade neoplasms of the central nervous system (CNS), kidneys and soft tissue that usually occur in children. Accessibility INI1 expression retained 100%: INI1 loss 85% nearly definitional: May have cross striations: No cross striations: May have strap cells: Strap cells rare: No consistent abnormalities of 22q : Various deletions, translocations involving 22q11 may be seen Epub 2020 Mar 11. Epub 2018 Dec 18. 2021 Feb 2;13(2):e13082. Significant progress has been made in understanding the molecular genetic alterations involved in sarcomagenesis. Kawai T, Ogata S, Nakashima H, Urabe S, Murakami I, Hiroshima K. Hum Pathol. Hua Y, Soni P, Larsen D, Zreik R, Leng B, Rampisela D. World J Gastroenterol. Utility of characteristic 'Weak to Absent' INI1/SMARCB1/BAF47 expression in diagnosis of synovial sarcomas. The SMARCB1/INI1 gene was first discovered in the mid-1990s, and since then it has been revealed that loss of function mutations in this gene result in aggressive rhabdoid tumors. 164 talking about this. In this study, we considered immunohistochemistry and SMARCB1/INI1 mutational status to examine SMARCB1 status in a series of pediatric chordomas (7 … Sigauke E, Rakheja D, Maddox DL, Hladik CL, White CL, Timmons CF, Raisanen J. Mod Pathol. Bethesda, MD 20894, Copyright Epub 2017 Dec 27. 158 talking about this. Pathologe. This conventional or distal form is composed of spindle-to-polygonal epithelioid cells arranged in nodules that commonly exhibit central necrosis.2 In 1997, a proximal form arising in the deep part of the pelvis, perineum, and genital tract and proximal extremities was described.3It consists … Thank you for joining our Facebook page. 2018 Jan-Feb;21(1):6-28. doi: 10.1177/1093526617749671. Absence of expression of SMARCB1/INI1 in malignant rhabdoid tumors of the central nervous system, kidneys and soft tissue: an immunohistochemical study with implications for diagnosis. Unable to load your collection due to an error, Unable to load your delegates due to an error. Wang H, Tang D, Wu D, Tao C, Chen G, Ru W, Zhu K. Transl Androl Urol. Singh M, Singh H, Hambro B, Kaur J, Rao R. Cureus. 2019 Sep;40(5):506-513. doi: 10.1007/s00292-019-0589-0. Alterations in the switching defective/sucrose non-fermenting (SWI/SNF) chromatin-remodeling complex are enriched in advanced thyroid cancer. 2020 Oct;9(5):2275-2280. doi: 10.21037/tau-20-834. Proximal-type epithelioid sarcoma of the vulva with INI1 diagnostic utility. Careers. Pediatr Dev Pathol. Clipboard, Search History, and several other advanced features are temporarily unavailable. Prevention and treatment information (HHS). Herein, we report an autopsy case of pleural MM with monomorphic rhabdoid features. The tumor cells, which had eosinophilic plump cytoplasm and eccentric nuclei, were loosely cohesive. F1000Res. Epub 2017 Dec 27. Kohashi K, Izumi T, Oda Y, Yamamoto H, Tamiya S, Taguchi T, Iwamoto Y, Hasegawa T, Tsuneyoshi M. Hum Pathol. Epub 2008 Apr 15. When genetic aberrations in the SMARCB1/INI1 gene occur, the result can cause complete loss of … 2015 Feb;46(2):225-30. doi: 10.1016/j.humpath.2014.10.010. 2020 Jun 30;9:662. doi: 10.12688/f1000research.24808.2. The epithelioid variant of schwannoma is rare, and loss of SMARCB1/INI1 expression has been observed in a subset of cases. Integrase Interactor 1 (INI-1) Deficient Renal Cell Carcinoma. 2006 Nov;56(11):702-6. doi: 10.1111/j.1440-1827.2006.02033.x. The roles of mutated SWI/SNF complexes in the initiation and development of hepatocellular carcinoma and its regulatory effect on the immune system: A review. Cytogenetic and molecular studies have identified nonrandom genetic abnormalities, including tumor suppressor gene inactivation. The most common genetic predisposition to multiple schwannoma growth is mutation of the neurofibromatosis type 2 gene. Thank you for joining our Facebook page. Since then, INI1 has also been implicated in the pathogenesis of additional tumor types including renal medullary carcinomas and epithelioid sarcomas and a subset of epithelioid malignant peripheral nerve sheath tumors, myoepithelial carcinomas, and extraskeletal myxoid chondrosarcomas. It is also known as INI1, INI-1 and BAF47 . Renal malignant tumor with the loss of INI1 expression and WT1 positive in a 3-year-old boy: a case report. kimura-path@hnh.hosp.go.jp; Department of Diagnostic Pathology, and Department of Clinical Research Pathology Division. SMARCB1/INI1/BAF47- deficient pleural malignant mesothelioma with rhabdoid features. Epub 2008 Oct 29. FOIA Cho YM, Choi J, Lee OJ, Lee HI, Han DJ, Ro JY. Fifteen cases have been reported previously, all of which were combined with other types of MM. SMARCB1/INI1 missense mutation in mucinous carcinoma with rhabdoid features. 2017 Apr;108(4):547-552. doi: 10.1111/cas.13173. Epub 2017 Apr 12. Epub 2015 Apr 24. Prevention and treatment information (HHS). © 2018 Japanese Society of Pathology and John Wiley & Sons Australia, Ltd. National Library of Medicine 91 talking about this. Seventeen additional MRT (10 renal, 7 extra-renal) without INI1 molecular analysis were also analyzed. Clipboard, Search History, and several other advanced features are temporarily unavailable. Rhabdoid tumor is characterized by rhabdoid cells and shows complete loss of SMARCB1/INI1 protein expression. Epub 2014 Nov 4. Aim: Abnormalities of SMARCB1 (INI1), which encodes a member of the SWI/SNF pathway, are found in neoplasms with rhabdoid morphology, such as malignant rhabdoid tumour of the kidney and atypical teratoid/rhabdoid tumour of the central nervous system. 8600 Rockville Pike 2008 Oct;18(4):517-9. doi: 10.1111/j.1750-3639.2008.00155.x. The SMARCB1/INI1 gene, that maps to chromosome 22q11.2, is part of the SWI/SNF chromatin remodeling complex that plays a role in transcriptional regulation. NCI CPTC Antibody Characterization Program. Unable to load your collection due to an error, Unable to load your delegates due to an error. Recently, the term “rhabdoid tumor” has become synonymous with decreased SMARCB1/INI1 expression. SMARCB1/INI1-deficient tumors of adulthood. Kohashi K, Yamada Y, Hotokebuchi Y, Yamamoto H, Taguchi T, Iwamoto Y, Oda Y. Hum Pathol. Convenient outline format gives fast access to important clinical information, including immunology, physiology, infectious diseases, and congenital syndromes, as well as neoplastic and medical pathology, gross and microscopic anatomy, embryology, cell biology, and more. Thank you for joining our Facebook page. Pleural mesothelioma classification update. Oncogenic roles of SMARCB1/INI1 and its deficient tumors. Yatabe Y, Dacic S, Borczuk AC, Warth A, Russell PA, Lantuejoul S, Beasley MB, Thunnissen E, Pelosi G, Rekhtman N, Bubendorf L, Mino-Kenudson M, Yoshida A, Geisinger KR, Noguchi M, Chirieac LR, Bolting J, Chung JH, Chou TY, Chen G, Poleri C, Lopez-Rios F, Papotti M, Sholl LM, Roden AC, Travis WD, Hirsch FR, Kerr KM, Tsao MS, Nicholson AG, Wistuba I, Moreira AL. Article Outline. Privacy, Help ... Braf cathepsin k cd57 chromogranin fumarate hydratase fli1 hmb45 hmwck ini1 melana p63 s100a1 pending sdhb sma synaptophysin tfe3 uroplakin ii pending wt1. Infrequent SMARCB1/INI1 gene alteration in epithelioid sarcoma: a useful tool in distinguishing epithelioid sarcoma from malignant rhabdoid tumor. APMIS. 6 Disruption of SMARCB1/INI1 expression in mice results in early embryonic lethality: SMARCB1/INI1‐null embryos die between 3.5 and 5.5 days post‐coitum. Thank you for joining our Facebook page. Our mission is to provide useful professional information to practicing pathologists and laboratory personnel, through our textbook, in 15 seconds or less. INI1-ve in AT/RT. Our mission is to provide useful professional information to practicing pathologists and laboratory personnel, through our textbook, in 15 seconds or less. Cell Prolif. Specific chapters cover the pathology of each organ system. COVID-19 is an emerging, rapidly evolving situation. Since then, INI1 has also been implicated in the pathogenesis of additional tumor types including renal medullary carcinomas and epithelioid sarcomas and a subset of epithelioid malignant peripheral nerve sheath tumors, myoepithelial carcinomas, and extraskeletal myxoid chondrosarcomas. Abstract. As varied as this group appears, they all show loss of INI1 protein expression, a propensity for rhabdoid cytomorphology, and sometimes other overlapping immunohistochemical and histologic findings. This is a free, no registration website - we are entirely supported by advertising. Mutations of INI1 (integrase interactor 1) have been frequently described in rhabdoid tumours, 1 medulloblastomas and, occasionally, in lymphoid malignancies, 2, 3 although the search for INI1 mutations in many other types of tumours has been unsuccessful (lung carcinoma, sarcomas, and breast cancer). It typically occurs in the distal extremities of young adults as a slow-growing nodule within the dermis or subcutis or in the deep soft tissues. Please enable it to take advantage of the complete set of features! Johanna D. Strehl, David L. Wachter, Jutta Fiedler, Engelbert Heimerl, Matthias W. Beckmann, Arndt Hartmann, Abbas Agaimy, Pattern of SMARCB1 (INI1) and SMARCA4 (BRG1) in poorly differentiated endometrioid adenocarcinoma of the uterus: analysis of a series with emphasis on a novel SMARCA4-deficient dedifferentiated rhabdoid variant, Annals of Diagnostic Pathology, … Clinicopathologic study of deciduoid mesothelioma using SMARCB1/INI1 immunohistochemistry and fluorescence in situ hybridization. We will review the clinicopathologic features of these tumor types and emphasize the clinical utility of INI1 immunohistochemistry in differential diagnosis. Epub 2021 Jan 21. SMARCB1/INI1/BAF47‐ deficient pleural malignant mesothelioma with rhabdoid features. Usually supratentorial, occasionally in posterior fossa, case reports of spinal cord. Pathol Int. Thank you for joining our Facebook page. Would you like email updates of new search results? Cancer Sci. The INI1/SMARCB1 protein product (INI1), a component of a transcription complex, was recently implicated in the pathogenesis of schwannomas in two members of a single family with familial schwannomatosis 1.Tumors were found to have both constitutional and somatic mutations of the SMARCB1 gene and showed a mosaic pattern of loss of INI1 expression by immunohistochemistry, … FOIA 2020 Sep 28;26(36):5520-5526. doi: 10.3748/wjg.v26.i36.5520. 2012 Oct;16(5):411-5. doi: 10.1016/j.anndiagpath.2011.04.002. INI1 immunohistochemistry is frequently used for the diagnosis of malignant rhabdoid neoplasms. Careers. Immunohistochemistry showed that the cells were diffusely positive for calretinin, D2-40, vimentin, CAM5.2, and AE1/AE3; and negative for WT-1, TTF-1, CK7, CEA, desmin, CD34, BCL-2, S100 protein, and p40. SWI/SNF-related, matrix-associated, actin-dependent regulator of chromatin, subfamily B, member 1, commonly abbreviated SMARCB1, is a diagnostic immunostain, because nuclear staining is lost in some specific types of cancer shown below. 2020 Apr;53(4):e12791. Head Neck Pathol. ssion at the protein level. eCollection 2020. Online ahead of print. Recent studies have described loss of SMARCB1/INI1 protein in poorly differentiated chordomas associated not with point mutations but with SMARCB1/INI1 gene deletions instead. SMARCB1-deficient Tumors of Childhood: A Practical Guide. Click here for patient related inquiries. We explore the implications for prognosis and outcome. 103 talking about this. Absence of expression of SMARCB1/INI1 in malignant rhabdoid tumors of the central nervous system, kidneys and soft tissue: an immunohistochemical study with implications for diagnosis. Epithelioid Sarcoma of the External Auditory Canal: An Uncommon Tumor at an Unusual Site and a Brief Overview of the Literature. 8600 Rockville Pike Corresponding Author. This site needs JavaScript to work properly. 2006 May;19(5):717-25. doi: 10.1038/modpathol.3800581. Renal medullary carcinoma is a rare, well-recognized highly aggressive tumor of varied histopathology, which occurs in young patients with sickle cell trait or disease. F Bourdeaut. 2009 Mar;40(3):349-55. doi: 10.1016/j.humpath.2008.08.007. Kim HJ, Kim MH, Kwon J, Kim JY, Park K, Ro JY. 2021 Jan 4. doi: 10.1007/s12105-020-01275-4. 2018 Jan-Feb;21(1):6-28. doi: 10.1177/1093526617749671. Malignant mesothelioma (MM) with rhabdoid features is an MM variant. National Library of Medicine Integrase interactor 1 (INI1), encoded by the SMARCB1 gene on the long arm of chromosome 22, is one of the core subunits of the SWI/SNF complex. 1. Please enable it to take advantage of the complete set of features! Epub 2019 Aug 22. Poorly differentiated sinonasal carcinomas are a heterogenous group of aggressive neoplasms that encompasses squamous cell carcinoma including basaloid variant, lymphoepithelial carcinoma, sinonasal undifferentiated carcinoma, and neuroendocrine-type small cell carcinoma. A kidney cyst may become infected causing fever and pain. Neither homozygous deletion of p16 nor BAP-1 protein loss was observed. doi: 10.7759/cureus.13082. BAP-1; SMARCB1/ INI1/BAF47; p16 FISH; pleural mesothelioma; rhabdoid tumor. 125 talking about this. Herein, we report an autopsy case of pleural MM with monomorphic rhabdoid features. ERG and SALL4 expressions in SMARCB1/INI1-deficient tumors: a useful tool for distinguishing epithelioid sarcoma from malignant rhabdoid tumor. Epub 2011 Jul 2. Bethesda, MD 20894, Copyright Privacy, Help SMARCB1/INI1 is ubiquitously expressed in the nuclei of all normal cells. Keywords: The patient was a 62-year-old male without a history of asbestos exposure. Pediatr Dev Pathol. Virchows Arch. hSNF5/INI1‐deficient tumours and rhabdoid tumours are convergent but not fully overlapping entities ... Laboratoire de Pathologie Moléculaire des Cancers, INSERM U509, 26 rue d'Ulm, 75246, Paris CEDEX 05, France.Search for more papers by this author. We describe a patient with multiple schwannomas and mutation in the recently described INI1 gene, which also predisposes to the disease. Best Practices Recommendations for Diagnostic Immunohistochemistry in Lung Cancer. Ann Diagn Pathol. First, an investigation of INI1 immunoexpression statuses in 60 formalin-fixed paraffin-embedded epithelioid sarcoma specimens (proximal type, 29 cases; conventional type, 31 cases) was performed. J Thorac Oncol. 2019 Nov;93:23-29. doi: 10.1016/j.humpath.2019.08.016. Malignant mesothelioma (MM) with rhabdoid features is an MM variant. Twenty-seven MRTs with molecular analysis (19 renal, 8 extra-renal) were evaluated. Accessibility SMARCB1/INI1-deficient pancreatic undifferentiated rhabdoid carcinoma mimicking solid pseudopapillary neoplasm: A case report and review of the literature. Immunohistochemical analysis supports a role for INI1/SMARCB1 in hereditary forms of schwannomas, but not in solitary, sporadic schwannomas. [Immunophenotyping of lung tumors : An update]. Brain Pathol. In the available INI1-preserved epithelioid sarcoma cases, we analyzed the BRG1, BAF155, and BAF170 protein expressions. Would you like email updates of new search results? However, several studies have shown that specific molecular aberration involving switch/sucrose non-fermentable–related, matrix-associated, actin-dependent regulator of chromatin, subfamily B member 1 (SMARCB1, hSNF5/INI1) on chromosome 22, which can be identified by a lack of immunohistochemical staining with INI1, is an biomarker for malignant rhabdoid tumors .
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