{"id":1210,"date":"2018-12-20T16:26:54","date_gmt":"2018-12-20T16:26:54","guid":{"rendered":"https:\/\/wp.uthscsa.edu\/pathology\/?page_id=1210"},"modified":"2020-09-04T17:06:46","modified_gmt":"2020-09-04T17:06:46","slug":"fish-b-cell-lymphoma-panel","status":"publish","type":"page","link":"https:\/\/lsom.uthscsa.edu\/pathology\/reference-labs\/clinical-molecular-cytogenetics\/fish-b-cell-lymphoma-panel\/","title":{"rendered":"FISH B-cell Lymphoma Panel"},"content":{"rendered":"

[vc_row][vc_column width=”2\/3″][vc_column_text]<\/p>\n

Fluorescence In Situ Hybridization \u2013 B-cell Lymphoma Panel<\/h3>\n

Test Overview<\/p>\n

CPT Code(s)<\/strong><\/p>\n

88237-52, 88271\u00d73, 88275, 88291<\/p>\n

Methodology<\/strong><\/p>\n

Culture\/Hybridization\/Microscopy\/Interpretation<\/p>\n

Specimen Requirement<\/strong><\/p>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t
Bone Marrow and\/or Leukemia Blood<\/th>Lymph Node<\/th>\n<\/tr>\n<\/thead>\n
Container: Sodium Heparin (green top tube)<\/td>Container: Transport Media\/Saline<\/td>\n<\/tr>\n
Optimal Quantity: 2-3 ml<\/td>Optimal Quantity: 23 cm<\/td>\n<\/tr>\n
Minimum Quantity: 1-2 ml<\/td>Minimum Quantity: 13 cm<\/td>\n<\/tr>\n
Storage: Room Temperature<\/td>Storage: Room Temperature<\/td>\n<\/tr>\n
Stability at Room Temperature: 8 hours, then refrigerate<\/td>Stability at Room Temperature: 8 hours, then refrigerate<\/td>\n<\/tr>\n
Transportation: Avoid freezing or heating over 35oC<\/td>Transportation: Avoid freezing or heating over 35o<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

Test Details<\/p>\n

Clinical Significance<\/strong><\/p>\n

Fluorescence in situ hybridization (FISH) is a sensitive method to detect smaller genomic changes associated with various hematological malignancies and solid tumors.\u00a0\u00a0There are several advantages with FISH technology over routine chromosome analysis and such advantages include the ability of FISH technology to detect genomic abnormalities in non-viable and non-dividing tissues, rapid turnaround time, and increased resolution.\u00a0\u00a0However, FISH technology is complementary to routine chromosome analysis and cannot substitute routine chromosome analysis for diagnosis of cancer.<\/p>\n

Clinical Background<\/strong><\/p>\n

B-cell lymphoma is a large group of\u00a0heterogenous\u00a0disorders and comprises a majority of non-Hodgkin lymphomas.\u00a0\u00a0The most common abnormality seen in these disorders is the IGH gene translocations or rearrangements involving the 14q32 locus.\u00a0\u00a0Included in this group is follicular lymphoma (FL),\u00a0Burkitt\u00a0Lymphoma (BL) and diffuse large B-cell lymphoma (DLBCL).\u00a0\u00a0The characteristic chromosome abnormality, t(14;18) resulting in IGH\/BCL2 fusion is seen in about 80% of FL, and about 20-30% of DLBCL while a majority of patients with BL harbor the characteristic t(8;14) resulting in\u00a0cMYC\/IGH fusion.<\/p>\n

BCL6 gene rearrangements are also associated with B-cell lymphoma.\u00a0Cyclin\u00a0D1 gene rearrangements, especially the\u00a0t(11;14) distinguishes mantle cell lymphoma (ML) from other\u00a0lymphoproliferative\u00a0disorders and hence is diagnostic for ML. Although majority of such abnormalities can be detected on routine chromosome analysis, interphase FISH analysis due to its high sensitivity can detect low-level clones thus identifying\u00a0prognostically\u00a0and therapeutically important genetic abnormalities.<\/p>\n

Methods<\/strong><\/p>\n

The samples are usually cultured for 24-hours before hybridizing with the probes.\u00a0\u00a0After hybridization and post-hybridization washes, the slides are analyzed under a fluorescence microscope equipped with\u00a0epifluorescence\u00a0and appropriate filter sets.\u00a0\u00a0Analysis and scoring is carried out by two certified technologists in a blinded fashion.\u00a0\u00a0Results are reviewed by both the laboratory manager and the director. The B-cell lymphoma panel includes the following probes.<\/p>\n\n\n\n\n\t\n\t\n\t\n\t
t(14;18)<\/td>IGH \/ BCL2<\/td>Cytocell\u00a0(cat # LPH018)<\/td>\n<\/tr>\n
8q rearrangement<\/td>cMYC<\/td>Cytocell\u00a0(cat # LPH010)<\/td>\n<\/tr>\n
3q rearrangement<\/td>BCL6<\/td>Cytocell\u00a0(cat # LPH035)<\/td>\n<\/tr>\n
t(11;14)<\/td>CCND1 \/ IGH<\/td>Cytocell\u00a0(cat # LPH021)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

Interpretation of Results<\/strong><\/p>\n

The morphologic interpretation and correlation of results on all cases is performed by a board-certified doctoral level scientist (laboratory director).\u00a0The final report has a narrative description of results.\u00a0\u00a0If abnormalities are present, they are explained in a paragraph which helps to clarify and correlate chromosomal findings with phenotype.\u00a0References are included in the report to help the referring physician with interpretation, which include books or journals that contain appropriate information. Recommendations are made as to any additional testing, if necessary.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column width=”2\/3″][vc_column_text] Fluorescence In Situ Hybridization \u2013 B-cell Lymphoma Panel Test Overview CPT Code(s) 88237-52, 88271\u00d73, 88275, 88291 Methodology Culture\/Hybridization\/Microscopy\/Interpretation Specimen Requirement Test Details Clinical Significance Fluorescence in situ hybridization (FISH) is a sensitive method to detect smaller genomic changes associated with various hematological malignancies and solid tumors.\u00a0\u00a0There are several advantages with FISH technology over […]<\/p>\n","protected":false},"author":161,"featured_media":0,"parent":615,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/child-page.php","meta":{"footnotes":""},"class_list":["post-1210","page","type-page","status-publish","hentry"],"yoast_head":"\nFISH B-cell Lymphoma Panel - Department of Pathology and Laboratory Medicine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lsom.uthscsa.edu\/pathology\/reference-labs\/clinical-molecular-cytogenetics\/fish-b-cell-lymphoma-panel\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FISH B-cell Lymphoma Panel - 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