Displaying publications 1 - 20 of 49 in total

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  1. Hanizah Salwa Amran, Nurimatussolehah Sarijan, Sathar, Jameela Sathar, Sabariah Md Noor
    MyJurnal
    Hb Malay was first described in 1989 following an investigation of anaemia in a 22-year-old Malay gentleman who was homozygous for this  chain variant. This Hb variant is caused by AAC  AGC mutation at codon 19 of the  globin gene resulting in the substitution of serine for asparagine [1]. The mutation creates cryptic RNA splice site in exon 1 of the -globin gene leading to an abnormal RNA processing. Thus, this mutation not only produces variant haemoglobin but also a mild + thalassemia phenotype [2].
  2. Lim, Wai Feng, Muniandi, Logeswaran, George, Elizabeth, Sathar, Jameela, Teh, Lai Kuan, Lai, Mei I.
    MyJurnal
    HbE/β-thalassaemia is a compound heterozygous mutation with a vast clinical phenotype [1]. To improve quality of life, HbE/β-thalassaemia individuals receive different treatment strategies, either individually or in combination with therapy(ies), including blood transfusion, iron chelation and splenectomy [2-3]. Thus far, there are limited studies conducted regarding the effect of treatments in HbE/β-thalassaemia individuals. We hereby investigated the effect of treatments with respect to red blood cell indices, haemoglobin subtypes and gene expressions among 30 HbE/beta-thalassaemia individuals. Statistical analyses were carried out using SPSS 17.0. As compared to single therapy (transfused only individuals) and double therapies (transfused-chelated only individuals), individuals receiving triple therapies (transfused-chelated-splenectomised individuals) showed significantly high mean cell volume (MCV), mean cell haemoglobin (MCH) and reticulocytes count (Fig.1).

    These findings suggest that triple therapies are the most effective in ameliorating the severity of the disease in terms of microcytosis and hypochromia [3-5]. The high reticulocyte count in triple therapies also allows the bone marrow to actively produce red blood cells suggesting that these therapies have clinical benefits by suppressing the ineffective erythropoiesis and improving the erythropoietic environment significantly among HbE/β-thalassaemia individuals in our studied group [6-7].

    The effectiveness of these treatments is different among each HbE/β-thalassaemia individual whereby clinical variabilities among them could be a contributing factor. Triple therapies giving the best advantage to the HbE/β-thalassaemia patient in this study.
  3. Kasinathan G, Sathar J
    JRSM Open, 2020 Jan;11(1):2054270419894826.
    PMID: 32002188 DOI: 10.1177/2054270419894826
    Introduction: Idiopathic hypereosinophilic syndrome is defined as persistently elevated peripheral blood absolute eosinophil count of more than 1.5 × 109/L for at least six months with no obvious secondary cause.

    Case Presentation: We report the case of a 26-year-old gentleman of Malay ethnicity who presented to the medical department with a three-week history of abdominal distension associated with dyspepsia and epigastric pain. Physical examination revealed ascites. The complete blood count portrayed peripheral leucocytosis with eosinophilia of 8.84 × 109/L. Parasitic serology was negative. Paracentesis analysis showed exudative ascites with an absolute eosinophil count of 8 × 109/L. He was referred to the haematology department. He was noticed to have bilateral tonsillitis and pruritic skin rash at the legs. There were no palpable lymph nodes or organomegaly. A peripheral blood film showed 44% eosinophils with no excess blasts. Clonal eosinophilic fusion studies did not detect FIP1L1-PDGFRA mutation. JAK2 V617F and BCR-ABL1 mutations were undetected. Serum B12 and tryptase levels were normal. A whole-body computed tomography imaging showed bowel wall thickening at the duodenum, jejunum, ileum, rectosigmoid and splenic flexure. Sections of fragments taken from the endoscopy showed features of eosinophilic gastritis and colitis on histology. Bone marrow biopsy depicted marked eosinophilia. He was started on oral imatinib mesylate 200 mg daily and oral prednisolone 0.5 mg/kg daily which was tapered based on response. He achieved complete remission and is now asymptomatic.

    Conclusion: The diagnosis of hypereosinophilic syndrome should be considered in a patient with unexplained ascites. Secondary sinister causes such as malignancy should always be excluded.

  4. Kasinathan G, Sathar J
    SAGE Open Med Case Rep, 2020;8:2050313X20926076.
    PMID: 32537161 DOI: 10.1177/2050313X20926076
    Acute promyelocytic leukaemia consists of 7%-8% of cases of acute myeloid leukaemia. Extramedullary manifestations are rare and show distinct biological features. We describe a 22-year-old female of Malay ethnicity who presented with fever and a left axillary swelling for a week. The peripheral blood smear showed abnormal promyelocytes with faggot cells. PML-RAR-alpha t(15;17) (q22; q12) was detected by polymerase chain reaction. The left axillary swelling histology and immunohistochemical staining confirmed granulocytic sarcoma. She was induced with triple agents consisting of all-trans-retinoic-acid, arsenic trioxide and idarubicin. On day 14 of induction, she developed severe neutropenic sepsis in which she responded to ventilation and antimicrobials. She completed her induction, consolidation and maintenance therapy. Currently she is in molecular and morphological remission. Extramedullary disease in acute promyelocytic leukaemia usually has a severe clinical presentation. Granulocytic sarcoma may present as an early feature of acute promyelocytic leukaemia.
  5. Kasinathan G, Sathar J
    Blood Res, 2021 Dec 31;56(4):315-321.
    PMID: 34916340 DOI: 10.5045/br.2021.2021165
    Background: Glanzmann thrombasthenia is associated with abnormalities in the glycoprotein IIb/IIIa receptor. This study, conducted at Ampang Hospital, Malaysia, aimed to assess outcomes of blood management strategies for Glanzmann thrombasthenia.

    Methods: Ten patients with Glanzmann thrombasthenia aged 9 years (2009‒2018) were examined. Data on clinical characteristics, transfusion practices, and patient blood management were obtained from medical records. Patient blood management methods included parenteral iron, erythropoietin, hormonal pills, intrauterine progesterone contraceptive devices, tranexamic acid, and recombinant factor VIIa. Primary outcomes were hemoglobin levels and the proportion of patients who received blood transfusion. Secondary outcomes were morbidity and mortality.

    Results: The median age at diagnosis was 8.2 years (range, 1‒15 yr). The female-to-male ratio was 9:1. Eight patients had type 2 disease (5‒20% of normal GPIIb/IIIa), and two patients had type 1 disease (normal GPIIb/IIIa <5%). All patients had iron deficiency. All female patients presented with significant menorrhagia. Other bleeding symptoms included epistaxis, spontaneous skin bruising, hemoptysis, gingival bleeding, knee hemarthrosis, and pelvic hematoma. No patient experienced life-threatening bleeding. Our patients had a mean hemoglobin level of 5.6 g/dL at diagnosis. All patients were optimized using non-transfusion methods as described above. Our patient had a current mean hemoglobin level of 11 g/dL. Approximately 70% (7/10) of patients did not experience receiving blood transfusions in the last 5 years. No patient experienced non-transfusion-related morbidities such as sepsis, thromboembolism, or cardiorespiratory events.

    Conclusion: High cost, transfusion-related adverse events, and immunomodulation could be effectively prevented by avoiding unnecessary blood transfusions.

  6. Kasinathan G, Sathar J
    Ann Med Surg (Lond), 2020 Dec;60:323-326.
    PMID: 33204423 DOI: 10.1016/j.amsu.2020.11.009
    Autoimmune hemolytic anaemia (AIHA) is a heterogenous disorder characterised by the presence of IgG or IgM pathological autoantibodies that target antigens of erythrocytes resulting in active hemolysis. Case presentation: A 40-year-old gentleman presented to a medical centre with chest pain and right sided hemiparesis for a week. He was pale and jaundiced. The power of the right upper and lower limbs was 3/5. His spleen was palpable. His complete blood count revealed macrocytic anaemia of 7.6 g/dL. The brain Magnetic Resonance Imaging (MRI) showed left fronto-parietal infarction. The right cardiac and left carotid angiogram revealed thromboses involving the right coronary and left internal carotid artery respectively. At the cardiology department, he was transfused with two units of red blood cells without his anemia being investigated and a stent was deployed to the left internal carotid artery. He was referred to the hematology department in which his peripheral blood smear revealed hemolysis and his direct antiglobulin test was positive. He responded to a course of steroids and direct oral anticoagulation and is in complete remission for the past 18 months. Conclusion: It is always imperative to investigate the cause of anaemia and consider hemolysis in a patient presenting with multiple unexplained thromboses.
  7. Kasinathan G, Sathar J
    Ann Med Surg (Lond), 2020 Aug;56:173-177.
    PMID: 32637095 DOI: 10.1016/j.amsu.2020.06.035
    Coronavirus-19 disease (COVID-19), a zoonosis, was first reported in the city of Wuhan, province of Hubei, China in December 2019. The disease is caused by the Severe Acute Respiratory Syndrome-CoronaVirus-2 (SARS-CoV-2). As of 12th of May 2020, 4,256,022 confirmed cases affecting 212 countries with 287,332 deaths have been reported. The common symptoms reported in patients with COVID-19 are fever, dry cough, dyspnoea and gastrointestinal symptoms such as vomiting and diarrhoea. Non-survivors often succumb due to widespread pulmonary intravascular coagulopathy, arterial and venous thromboembolism, disseminated intravascular coagulopathy (DIC), secondary hemophagocytic lymphohistiocytosis (sHLH), and multiorgan dysfunctional syndrome (MODS). All hospitalised patients should be monitored closely for thrombotic events. Patients who develop bleeding episodes should be managed according to standard DIC guidelines. The main objectives of this review are 1) to provide a succinct background of this novel disease 2) discuss the haematological presentations and mechanisms of thrombosis 3) emphasize the role of anti-coagulation prophylaxis 4) explore the management of coagulopathy 5) provide insight on management of patients with COVID-19 disease and pre-existing bleeding disorders.
  8. Kasinathan G, Sathar J
    Clin Case Rep, 2021 Jun;9(6):e04226.
    PMID: 34188920 DOI: 10.1002/ccr3.4226
    Hyperhemolysis syndrome (HS) is characterized by the occurrence of severe anemia with post-transfusion hemoglobin and hematocrit levels being markedly lower than those present prior to transfusion. A high index of suspicion of HS in a multi-transfused thalassemia patient allows prompt institution of therapy resulting in improved survival outcome.
  9. Ambayya, Angeli, Sasmita, Andrew Octavian, Zainina Seman, Chang, Kian Meng, Sathar, Jameela, Yegappan, Subramanian, et al.
    MyJurnal
    Insights into molecular karyotyping using comparative genomic hybridization (CGH) and single nucleotide polymorphism (SNP) arrays enable the identification of copy number variations (CNVs) at a higher resolution and facilitate the detection of copy neutral loss of heterozygosity (CN-LOH) otherwise undetectable by conventional cytogenetics. The applicability of a customised CGH+SNP 180K DNA microarray in the diagnostic evaluation of Acute Myeloid Leukaemia (AML) in comparison with conventional karyotyping was assessed in this study. Methods: Paired tumour and germline post induction (remission sample obtained from the same patient after induction) DNA were used to delineate germline variants in 41 AML samples and compared with the karyotype findings. Results: After comparing the tumour versus germline DNA, a total of 55 imbalances (n 5-10 MB = 21, n 10-20 MB = 8 and n >20 MB = 26) were identified. Gains were most common in chromosome 4 (26.7%) whereas losses were most frequent in chromosome 7 (28.6%) and X (25.0%). CN-LOH was mostly seen in chromosome 4 (75.0%). Comparison between array CGH+SNP and karyotyping revealed 20 cases were in excellent agreement and 13 cases did not concord whereas in 15 cases finding could not be confirmed as no karyotypes available. Conclusion: The use of a combined array CGH+SNP in this study enabled the detection of somatic and germline CNVs and CN-LOHs in AML. Array CGH+SNP accurately determined chromosomal breakpoints compared to conventional cytogenetics in relation to presence of CNVs and CN-LOHs.
  10. Laffan M, Sathar J, Johnsen JM
    Haemophilia, 2021 Feb;27 Suppl 3:66-74.
    PMID: 32578345 DOI: 10.1111/hae.14050
    von Willebrand disease (VWD) is the most common inherited bleeding disorder. VWD is caused by deficiencies in von Willebrand factor (VWF), a critical adhesive haemostatic protein. This review provides an overview of VWD diagnosis and treatment, special considerations in treating women with VWD, and current genomic approaches to VWD. For diagnosis and treatment in VWD, an accurate diagnosis is critical to providing effective treatments, determining appropriate laboratory monitoring and for counselling the patient and family. Diagnosis of VWD begins with the clinical assessment for the bleeding phenotype, which is usually characterized by mucocutaneous and provoked bleeding. The diagnosis of VWD is then made by laboratory investigation. Multiple assays are used to assess VWF levels and functions. The mainstays of VWD treatment are tailored by VWD type and symptoms, and can include antifibrinolytic treatment, desmopressin and VWF replacement treatment. Women with VWD are also at risk for excessive uterine bleeding, such as with menses and childbirth. In addition to standard VWD treatments, heavy menstrual bleeding can be treated with hormones. Interdisciplinary management of childbirth and prophylaxis in the postpartum period are needed to reduce the risk of postpartum haemorrhage. Genomic approaches to VWD can inform VWD diagnosis, treatment, test assay selection, reproductive planning and family counselling. Most VWD patients have an identifiable VWF gene DNA variant. Next-generation sequencing is rapidly being adopted to provide more comprehensive VWF sequence information for patients with known or suspected VWD.
  11. Ambayya A, Sathar J, Hassan R
    Diagnostics (Basel), 2021 Sep 09;11(9).
    PMID: 34573992 DOI: 10.3390/diagnostics11091652
    Hitherto, there has been no comprehensive study on the usefulness of cell population data (CPD) parameters as a screening tool in the discrimination of non-neoplastic and neoplastic haematological disorders. Hence, we aimed to develop an algorithm derived from CPD parameters to enable robust screening of neoplastic from non-neoplastic samples and subsequently to aid in differentiating various neoplastic haematological disorders. In this study, the CPD parameters from 245 subtypes of leukaemia and lymphoma were compared against 1103 non-neoplastic cases, and those CPD parameters that were vigorous discriminants were selected for algorithm development. We devised a novel algorithm: [(SD-V-NE*MN-UMALS-LY*SD-AL2-MO)/MN-C-NE] to distinguish neoplastic from non-neoplastic cases. Following that, the single parameter MN-AL2-NE was used as a discriminant to rule out reactive cases from neoplastic cases. We then assessed CPD parameters that were useful in delineating leukaemia subtypes as follows: AML (SD-MALS-NE and SD-UMALS-NE), APL (MN-V-NE and SD-V-MO), ALL (MN-MALS-NE and MN-LMALS-NE) and CLL (SD-C-MO). Prospective studies were carried out to validate the algorithm and single parameter, MN-AL2-NE. We propose these CPD parameter-based discriminant strategies to be adopted as an initial screening and flagging system in the preliminary evaluation of leukocyte morphology.
  12. Nor Ezzati Nor Albashri, Noor Fadzilah Zulkifli, Asral Wirda Ahmad Asnawi, Zetty Nadia Mohd Zain, Rashidah Mohamed, Sathar, Jameela, et al.
    MyJurnal
    Thalassaemia is one of the most common autosomal recessive blood disorders in the world and its carrier status is prevalent in nearly 15% of Malaysian population. The global and economic burden for lifelong care of those affected increases every year. Currently, there is no policy on thalassaemia-carrier screening for couples prior to marriage besides HIV/AIDS screening in Malaysia. Other countries such as Iran, Iraq, Turkey, Bahrain and Saudi Arabia have established a policy for thalassaemia prevention by conducting premarital thalassaemia screening. Zero thalassaemia cases in new-born child in Cyprus have proven that thalassaemia can be prevented. This study aimed to investigate the willingness of premarital Malays on premarital thalassaemia screening.

    A set of questionnaire was distributed to 57 persons at premarital course sites and wedding fairs and expositions held in Kuala Lumpur and Selangor. Components in the questionnaire included: 1) demographic 2) knowledge about thalassaemia, signs and screening method 3) attitudes towards thalassaemia premarital screening 4) practices of premarital thalassaemia screening. Analysis for the questionnaire was performed using IBM SPSS Statistics 23.0.
  13. Kasinathan G, Lee BS, Sathar J
    Clin Case Rep, 2021 Mar;9(3):1330-1333.
    PMID: 33768838 DOI: 10.1002/ccr3.3757
    Although the patient with very severe aplastic anemia might be a fit elderly receiving standard therapy, there are factors which contribute to an adverse outcome such as severity of pancytopenia, absence of minor paroxysmal nocturnal hemoglobinuria clone and infective complications of therapy.
  14. Chong CC, Redzuan AM, Sathar J, Makmor-Bakry M
    J Patient Exp, 2021;8:2374373521996958.
    PMID: 34179377 DOI: 10.1177/2374373521996958
    Nonadherence to iron chelation therapy (ICT) remains a long-standing and serious issue in thalassemia, especially in resource-constrained developing countries. Barriers and facilitators of adherence to ICT in transfusion-dependent thalassemia (TDT) adult patients in Malaysia are not completely understood. This qualitative study explored factors affecting adherence to ICT among TDT adult patients at a public tertiary hospital in Malaysia. Data were collected through 21 semistructured in-depth interviews conducted among purposively sampled patients using a pretested interview guide. All interviews were audio-recorded and transcribed verbatim. Data were analyzed manually using thematic analysis method and managed using Atlas.Ti software. The most frequently discussed subthemes of barriers to adherence included patient-related factors, medications-related factors, sociocultural-related factors, environmental context and resources, and patient-health care provider relationship factors. The facilitators to adherence included having insights of their illness, prevailing sources of motivation emphasizing on strong self-efficacy, low medication burden, and having enabling environment. This study has identified barriers and facilitators that are unique to Malaysian thalassemic adults related to medication adherence. Options for future multifaceted interventions are suggested.
  15. Mohamad AS, Hamzah R, Selvaratnam V, Yegapan S, Sathar J
    Hematol Rep, 2018 Sep 05;10(3):7210.
    PMID: 30344984 DOI: 10.4081/hr.2018.7210
    Human hemoglobin of G-Makassar variant has been reported very rarely with Beta Thalassemia. In year 1969 Hb GMakassar was first identified in Makassar, Sulawesi (Celebes), Republic of Indonesia. The disease was first published in 1969 and 33 years later it has been reported at a family of Thailand origin. We report a 45-yearold Malay man who was investigated for anemia and thrombocytopenia then diagnosed with Hb G-Makassar. This finding describes as a new Hemoglobin GMakassar discovered in Malaysia after 14 years diagnosed in Thailand.
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