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Background Cytogenetics is a fundamental examination in the course and management of myelodysplastic syndrome (MDS) since it is widely used as a diagnostic and prognostic indicator for the disease. Some cytogenetic profiles are associated with a higher risk of acute myeloid leukemia (AML) transformation. This is the first study to evaluate the cytogenetic profile of Indonesian patients with MDS. Methods This prospective cohort study was conducted at the Cancer Center and several other referral hospitals. Patients with primary MDS aged >18 years were included in the study. Clinical examination, peripheral blood smear, and bone marrow aspiration were performed, followed by cytogenetic examination. The results were further categorized into revised international prognostic scoring system (IPSS-R) scores, and cytogenetic profiles were descriptively presented. Patients were followed up for one year to evaluate AML transformation. Results A total of 28 MDS patients, aged 66±12 years, were included in this study. The majority of the patients were male (n=17;60.7%), aged 65 years or above (n=19;67.9%), diagnosed with MDS-MLD (n=14;50%), and had an intermediate cytogenetic group (n=4;14.3%). The IPSS-R score was high in 6 (21.4%) patients and very high risk in 3 (10.7%) patients. During one-year follow-up, AML transformation occurred in 3 (10.7%) patients, and 10 (35.7%) patients ceased. Monosomy 7 was observed in 6 (21.4%) patients but in one metaphase each. Deletion of chromosome 5 (del(5)(q31)), del (16)(q21.1), and del (16)(q11.2) were found in a male patient with MDS-EB1. Conclusions Monosomy 7 and deletion of chromosome 5 have been identified in Indonesian patients with MDS. MDS-EB has the highest risk of AML transformation.

Background: The 7+3 regimen is still the main choice of remission induction chemotherapy in acute myeloid leukemia (AML). Successfully achieving complete remission (CR) and the time required to achieve it determine patient’s survival. Hence, bone marrow examination on 14th day of chemotherapy is recommended to predict CR. However, the examination is invasive and still inaccurate. Methods: A prognostic study with retrospective cohort design was conducted at two central hospitals in Indonesia based on medical record data of AML patients who underwent 7+3 induction chemotherapy from January 1st, 2015, to December 31st, 2019. The association of nadir leukocyte level and the time required to achieve it with CR occurrence was assessed. Results: One hundred and one subjects were recruited with median age 39 years and 55% men. A total of 55.4% subjects achieved CR. Nadir leukocyte level below 200/mcl was the most optimal cut-off point and independently associated with CR (OR 2.48; 95% CI 1.03–5.97) while time required to achieve it was not. Conclusions: The nadir leukocyte level is associated with an increase probability of CR but not for the time required to achieve it in AML patients undergoing 7+3 induction chemotherapy.

Background: The 7+3 regimen is still the main choice of remission induction chemotherapy in acute myeloid leukemia (AML). Successfully achieving complete remission (CR) and the time required to achieve it determine patient’s survival. Hence, bone marrow examination on 14th day of chemotherapy is recommended to predict CR. However, the examination is invasive and still inaccurate. Methods: A prognostic study with retrospective cohort design was conducted at two central hospitals in Indonesia based on medical record data of AML patients who underwent 7+3 induction chemotherapy from January 1st, 2015, to December 31st, 2019. The association of nadir leukocyte level and the time required to achieve it with CR occurrence was assessed. Results: One hundred and one subjects were recruited with median age 39 years and 55% men. A total of 55.4% subjects achieved CR. Nadir leukocyte level below 200/mcl was the most optimal cut-off point and independently associated with CR (OR 2.45; 95% CI 1.01–5.94) while time required to achieve it was not. Conclusions: The nadir leukocyte level is associated with an increase probability of CR but not for the time required to achieve it in AML patients undergoing 7+3 induction chemotherapy.