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  1. Riahi, Shahrzard, Mei, I Lai, George, Elizabeth, Ida Marhainis Isahak, Faridah Idris, Sabariah Md Noor
    MyJurnal
    Complete blood count (CBC) is used broadly to screen individual's general health status. Some inherited red blood cell (RBC) disorders influence the RBC parameters. Mean corpuscular volume (MCV) and mean corpuscular haemoglobin (MCH) are amongst the important RBC parameters used in thalassaemia-haemoglobinopathy screening [1-2]. Globin chain disorders and Southeast Asian Ovalocytosis (SAO) are common RBC disorders in Southeast Asian countries [3]. We evaluated the RBC parameters in patients with Hb E and those with SAO co-inheritance.

    A total of 33 from 1500 Malay patient’s samples that were sent for thalassaemia-haemoglobinopathies screening in Hospital Kuala Lumpur (HKL) were identified and consented (30 cases with Hb E and 3 cases with co-inheritance of Hb E and SAO). The inclusion criteria were Malay patients with MCV and MCH levels less than 78 fL and 27 pg respectively with presence of oval and stomatocytic RBCs in the peripheral blood film. DNA extraction was performed in samples suspected of having co-inheritance of SAO and Hb E. Primers 198 and 199 (AIT biotech Pte Ltd. Singapore) were designed for SAO detection [4], [5]. Hb E mutation was detected using ARMS PCR [6].

    SAO was characterised by presence of an in frame 27bp deletion in exon 11 of the band 3 gene. A band of 175bp was observed in normal subjects and two bands, 175bp and 148bp were observed in heterozygous SAO subjects (Fig. 1).
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