L2

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Related to FAB classification: APML, Auer rods

L2

(Layer 2) See OSI model.
References in periodicals archive ?
Thereby the types and subtypes of leukaemias were classified and reported as per FAB Classification. [14, 3]
More than 40 years after the FAB classification of acute leukemias was proposed, the role of MPO in defining myeloid lineage or mixed lineage is still a topic of discussion and investigation.
It was found as an indicator of disease prognosis in French multicenter AML trial in AML with t(8;21) (equivalent to M2 type in FAB classification).
FAB classification of acute myeloid leukaemia is still commonly used in our country because of its good reproducibility and easy application even in under resourced laboratories6,7.
Table 1: Frequency and percentage of 98 cases of AML cases according to FAB classification according to age and gender stratification.
CR correlated with age (P = 0.012), favorable karyotype (P = 0.010), and AML etiology (P = 0.022) but was not correlated with the induction protocol (P = 0.888) or the FAB classification (P = 0.128).
Regarding FAB classification, this study, in accordance with others, confirmed that NPM1 mutations occur most commonly in FAB class M5 (p=0.001) (7), (13), (20), (23).
We were surprised that the FAB Classification System is used for the acute leukemias and myelodysplastic syndromes instead of the WHO Classification System, which has been in print for over a year.
Aims of the present study to find out total prevalence of Acute Lymphoblastic Leukaemia including their morphological subgroups classified according to FAB classification.