Serum lactate dehydrogenase as a prognostic marker of childhood acute lymphoblastic leukemia.

The estimation of serum lactate dehydrogenase (LDH) is easy, readily available and economic. We can assume the prognosis of childhood acute lymphoblastic leukemia (ALL) through this measurement. This case control prospective study was aimed to evaluate that the level of serum LDH has the prognostic marker of childhood ALL. The study was carried out in the Paediatric Haematology and Oncology unit, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, during the period from January to December 2006 on 69 subjects with age ranging from birth to 15 years irrespective of sex. The study subjects were grouped into case (ALL-44) and control (healthy-25). Serum LDH level were performed in ALL patients on admission, day 14 and day 29 of induction and in healthy control when came for check up and found healthy. Haematological parameters were performed in ALL patients and in healthy control along with the measurement of serum LDH. On admission the level of serum LDH was significantly raised in ALL patients than healthy control (p<0.001). After induction, serum LDH level were significantly decreased at day 14 and day 29 of induction from admission (p<0.001). There was significant rise of platelet count were observed at day 29 of induction from admission (p<0.001). A significant decrease of peripheral and bone marrow blast cell percentages were observed at day 29 of induction from admission (p<0.001). The total WBC count was significantly decreased along with serum LDH at day 14 and day 29 of induction from admission (p<0.001). So, the measurement of serum LDH can be accepted as a good and reliable prognostic marker of childhood acute lymphoblastic leukemia.