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  • Title: Role of Hemoglobin Content of Reticulocyte to Evaluate Anemia in Patients with Malignancy.
    Author: Singh G, Chaudhry S, Kumawat A, Kumar G, Singh R.
    Journal: J Assoc Physicians India; 2022 Apr; 70(4):11-12. PubMed ID: 35443540.
    Abstract:
    Anemia is common in patients with cancer and it's pathophysiology is complex and multifactorial . Conventional methods (Serum Iron, serum ferritin, TIBC, TSAT) to diagnosing iron deficiency anemia in cancer patients is affected by cancer type, duration, treatment, infection and inflammation related to cancer. RET-He measure the recent functional availability of iron and the correlation well with iron deficient / restricted erythropoiesis, and it is not affected by infection and inflammation related to cancer so it can be useful marker to rapidly rule out iron deficiency in cancer patients. Material: This is observation longitudinal study and study subjects including all type of diagnosed cancer patients with anemia (Hb <13 gm % in males and <12gm% in females) with or without treatment. Study duration was 18 month and 200 sample size was taken. Complete blood count (Hb, TLC, platelets, MCV, MCH, MCHC, reticulocyte hemoglobin) were analysed on SYSMEX XN 1000i. Serum Ferritin was estimated using AVANTOR CL-1000i and Serum iron, TIBC, TSAT was run on EBRA MANHEIN CHEM 5X machine. Bone marrow examination was done for diagnosis / staging . Iron stores were evaluated by Perl's Prussian blue stain and graded as per criteria laid down by Gale et al. Observation: At a cut off of 28.4 pg, RET-He achieved sensitivity of 96.77 % and specificity of 81.66% with NPV of 99.3% and PPV of 49.2% for iron deficient state in cancer patients. This cut off value rules out iron deficient erythropoiesis, reduces unnecessary iron studies and encourage early treatment of iron deficiency. There is also moderate agreement exist between iron stores of bone marrow and RET-He with Kappa 0.411 and p value <.0001. Conclusion: RET-He is better indicator of IDA in cancer patients as compared to other conventional methods of diagnosing IDA.This study also revealed a direct correlation between RET-He and bone marrow iron stores. In future it is advisable to use RET-He as a predictor of IDA, which is sensitive and specific at particular cut off points in routine evaluation in IDA in cancer patients.
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