[Immunogenetic markers in hemoblastosis].

AIM

To establish for hemoblastoses general and individual associations between HLA genes and predisposition or resistance to malignant transformation of hemopoiesis.

MATERIAL AND METHODS

Antigens of class I and class II genes were determined by microlymphocytotoxic test and DNA typing (PCR-SSP) in 30 patients with acute myeloblastic leukemia (AML), 47 patients with acute lymphoblastic leukemia (ALL), 52 patients with chronic myeloblastic leukemia (CML), 58 patients with lymphogranulomatosis (LGM) and 224 donors.

RESULTS

HLA specificities were elucidated frequency of which was high in all the above nosological entities: Cw7 (RR 2.5 to 5.22), DRB111 (RR 2.3 to 4.88). Frequency of antigen B5 was high in three diseases (RR 2.14-2.6). A number of specificities have distribution deviations typical for only one or two diseases (A19--AML and CML, B27--ALL, DRB108--AML). The HLA-gene was detected the frequency of which was low in three diseases--DRB107 (RR 0.39 to 0.11). Individual preventive HLA genes for AML, ALL, LGM were A2, B8; A1, B8, B40; DRB101, respectively.

CONCLUSION

Cw7, DRB111, B5 are HLA-specificities marking hemopoiesis predisposition to malignant transformation in general. Development into a certain nosological entity depends on combination of general HLA-genes with markers of individual hemoblastosis. DRB107 is a general preventive gene. Preventive HLA genes can be also individual for the above hematological diseases.