B-cell acute lymphoblastic leukaemia (B-ALL)

Available tests Karyotyping; Fluorescence in situ hybridisation for: BCR-ABL to detect t(9;22); TEL-AML1 (ETV6-RUNX1) to detect t(12;21) and iAMP21; MLL to detect 11q23 rearrangement; MLL-AFF1 to detect t(4;11); TCF3(E2A) to detect t(1;19)/ t(17;19); PAX5 & ETV6 to detect dic(9;12); CDKN2A(9p21)/CEP9 to detect del(9p)
Clinical details: 
Cytogenetic analysis in B-cell acute lymphoblastic leukaemia (B-ALL) is utilised to aid in diagnosis and to identify prognostic markers which are used to direct patient management, some of which have now been incorprorated into the WHO classification of precursor lymphoid neoplasms.

Current National Cancer Research Institute clinical trials for B-ALL also use cytogenetically-defined markers in risk stratification and to determine trial eligibility. Cytogenetic markers identified at diagnosis can then also be used in assessment of remission status and in disease monitoring.
Synonyms or keywords: 
B-ALL, B-cell ALL, acute lymphoblastic leukaemia, BCR-ABL, t(9;22), TEL-AML1, ETV6-RUNX1, t(12;21), MLL, 11q23, MLL-AFF1, t(4;11), TCF3, E2A, t(1;19), t(17;19), PAX5, dic(9;12), ETV6, CDKN2A, 9p21, del(9p), iAMP21,
Sample type and Volume required: 
Peripheral blood, bone marrow aspirate, pleural effusion, fine needle aspirate, FFPE tissue sections, as appropriate, minimum volume as available
Turnaround time: 
Current service turnaround times: Urgent 1-7 calendar days; Non-urgent 5-10 calendar days; National targets: Urgent samples 95% reported within 14 days; Non-urgent 95% reported within 21 days
Storage and transport: 
Peripheral blood in lithium heparin or bone marrow transport medium. All other samples in bone marrow transport medium. Do not spindown or freeze samples before sending. Samples must arrive within 24 hours
Oncology Cytogenetics Laboratory at Guy's Hospital
020 7188 1713
Genetics Department
Tower Wing - 5th Floor
Guy's Hospital
Great Maze Pond
London SE1 9RT

For clinical advice or interpretation of results, please contact the laboratory in the first instance.

Print as a PDF

Last updated: 07/08/2015