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  1. Cheong I, Kong NCT
    Family Physician, 1989;1(3):42-47.
  2. Mohd Shahrir MS, Abdul Halim AG, Soehardy Z, Kong NCT
    APLAR Journal of Rheumatology, 2007;10(2):112-116.
    DOI: 10.1111/j.1479-8077.2007.00270.x
    Background and method: This clinical experience involved the treatment of resistant systemic lupus erythematosus (SLE) patients with CD20 monoclonal antibody. Five patients failed conventional therapy, two developed complications and one needed rituximab as an emergency measure. Four patients had lupus nephritis, three had autoimmune hemolytic anemia, two had immune thrombocytopenia and one had lupoid hepatitis. The patients were aged 14-49 years, (mean 28.63). Three were Malays, two Chinese, two Indian and one Turkish; six were females. Mean disease duration was 63.25 months and mean total rituximab dose received was 2812.50 mL. Results: Hemoglobin levels improved from 9.3 ± 5.7 to 13.1 ± 8.6 g/dL for two SLE patients with autoimmune hemolytic anemia after 34 weeks (P = 0.180). Platelet counts improved from 25 ± 17 to 198 ± 97 × 10 9/high powered field from 0 to 10 weeks for three SLE patients with immune thrombocytopenia (P = 0.109). In the lupus nephritis patients on rituximab, serum albumin improved from 24.5 ± 23.2 to 37.5 ± 31.8 mmol/L (n = 3) from week 0 to week 17 (P = 0.100). Urine protein creatinine ratio improved from 0.55 ± 0.23 to 0.08 ± 0.03 g/mmol creatinine (P = 0.068) from week 0 to week 13. C3 and C4 improved from 90.8 ± 36.5 to 120.7 ± 37.9 (P = 0.07) and 21.6 ± 10.1-27.3 ± 16.2 mg/dL (P = 0.27), respectively, and Systemic Lupus Erythematosus Activity Disease Index was reduced from 17.9 ± 11.2 to 6.3 ± 6.8 (P = 0.375) after 8 weeks. Two patients developed drug reactions to rituximab. Conclusion: All of the patients responded to rituximab on top of their conventional therapy. © 2007 Asia Pacific League of Associations for Rheumatology and Blackwell Publishing Asia Pty Ltd.
  3. Ibrahim N, Kong NCT, Desa A, Razali R
    Asia Pac Psychiatry, 2013 Apr;5 Suppl 1:35-40.
    PMID: 23857835 DOI: 10.1111/appy.12042
    Introduction: Research on depression in local patients with end-stage renal disease (ESRD) is sparse. Thus, this study aims to examine the frequency and severity of depression among ESRD patients and relate depression with their coping skills.
    Methods: A cross-sectional study using universal sampling method was conducted at several dialysis centers in Kuala Lumpur, Selangor and Johor, Malaysia. The Beck Depression Inventory II (BDI-II) and the Brief COPE scale were used to measure depression and coping skill, respectively.
    Results: The study involved 274 ESRD patients, comprising of 183 hemodialysis and 91 continuous ambulatory peritoneal dialysis patients. The result showed that 21.1% of the patients experienced moderate to severe depression. Several components of coping skill were associated with depression. However, only two components in the Brief COPE (behavioral disengagement and self-blame) were identified as predictors.
    Discussion: This study showed that depression is common in ESRD patients and is related to the types of coping skills adopted by patients. Hence, this study provides some insight into ESRD patients with depression. Appropriate counseling should be given to these patients to empower them to cope with the illness so as to enhance their quality of life.
  4. Gangaram HB, Kong NCT, Phang KS, Suraiya H
    Med J Malaysia, 2004 Dec;59(5):638-48.
    PMID: 15889567
    The usefulness of the direct immunofluorescent antibody technique--lupus band test--for the diagnosis of systemic lupus erythematosus (SLE) has been well established. The aims of the study were to determine the prevalence of the LBT at various sites of the skin in a cross section of patients with SLE and its correlation with disease activity. The LBT was demonstrated in 64% of skin lesions, 63% in non-lesional sun-exposed (NLSE) skin and 25% in non-lesional sun-protected (NLSP) skin. The prevalence of the LBT in lesional and NLSE groups was significantly different from the NLSP group (p = 0.03 and 0.005 respectively). There was a significant correlation between the presence of a positive LBT in NLSE skin with the presence of the LE cell phenomenon (p = 0.04) and anti - ds DNA antibody (0.02). In addition, there was a significant correlation between IgG LBT in the NLSE skin with serum hypocomplementaemia (p = 0.03) and anti - ds DNA antibody (p = 0.04). Other than these, no significant correlation was detected between the LBT from the 3 sites with overall clinical activity, renal disease, active skin lesions, or other laboratory indices of activity. These findings suggest that the LBT is mainly indicated as a diagnostic tool and has little role in assessing disease activity.
    Study site: Wards and clinics of the General Hospital, Kuala Lumpur, Malaysia
  5. Mohd Said MS, Bin Shudim SS, Mohamad K, Shaharir SS, Kong NCT, Ali RA
    Egyptian Rheumatologist, 2016;38:189-194.
    DOI: 10.1016/j.ejr.2015.12.001
    Aim of the work This work aimed to determine the frequency of subclinical memory dysfunction in a group of Malaysian systemic lupus erythematosus (SLE) patients and to study its relation to clinical characteristics, laboratory investigations and disease activity. Patients and methods Fifteen SLE patients attending the Universiti Kebangsaan Malaysia Medical Centre (UKMMC) and not known to have neuropsychiatric lupus were recruited. These patients were assessed using the Wechsler Memory Scale. Disease activity was assessed using the SLE disease activity index 2000 (SLEDAI-2K). Results The median age of the patients was 28 years (25–37 years) and they were 14 females and one male. Their median disease duration was 9.3 years (4.8–10 years). Their median SLEDAI-2K was 4 (0–6). Memory dysfunction was identified in 7/15 (46.7%) SLE patients and was significantly associated with lower serum thyroxine levels (median 12.27; 11.8–13.3 μg/dl) (p = 0.027) compared to those without memory impairment (15.48; 14.39–16.56 μg/dl). Auditory memory impairment was associated with the education level as the auditory memory index was significantly lower in patients with secondary education (n = 7, median 88; 86.5–91.5) compared to those who received tertiary education (n = 8, median 103; 97.5–119.5) (p = 0.025) while visual memory was influenced by disease duration (p = 0.016). There was no association between overall memory dysfunction and disease duration, number of relapses, clinical manifestations and SLEDAI-2K scores. Conclusion There is a high frequency of subclinical memory dysfunction among SLE patients. A remarkable association is present with lower thyroxine. Auditory memory impairment is related to the level of education and visual memory to disease duration. © 2015 The Authors
  6. Liao CM, Cheong IKS, Kong NCT
    Family Physician, 1991;3(2):31-33.
    Creatinine clearance is calculated from 24 hour urine creatinine excretion. This method of measuring creatinine clearance is cumbersome. Many formulae have been proposed as an alternative method of obtaining predicted creatinine clearance and they have all shown satisfactory results. From our study using 4 formulae, the correlation coefficient using these formulae rangedfrom 0.71 - 0.75. The correlation clearance was even better at > 0.90. We therefore advocate the routine use of these formulae for predicting creatinine clearance by clinicians.
    Study site: Nephrology clinic, Universiti Kebangsaan Malaysia unit at Hospital Kuala Lumpur, Malaysia
  7. Fauzi AR, Kong NCT, Chua MK, Jeyabalan V, Idris MN, Azizah R
    Med J Malaysia, 2004 Aug;59(3):372-7.
    PMID: 15727383
    Systemic Lupus Erythematosus (SLE) is a disease with multiorgan involvement and multiple autoantibody production including antineutrophil cytoplasmic antibodies (ANCA). Despite its reported prevalence in more than one third of SLE patients, the role of ANCA in the pathogenesis or otherwise in SLE remains unresolved. 131 SLE patients had been previously studied for various serologic parameters of disease activity. Their cumulative organ involvement in the course of their disease had also been determined and the Lupus Activity Index (LAI) calculated. Their stored sera were then screened for the presence of ANCA by two methods viz Indirect immunofluorescence (IIF) and also enzyme-linked immunosorbent assay (ELISA). ANCA was present in 24.8% of these SLE patients. The atypical ANCA pattern was predominant and accounted for an overall of 20.6%. Anti-MPO and anti-PR3 were detected in 1.5% of patients respectively. No association was found between ANCA positivity and disease activity. There was also no association of ANCA with specific organ involvement. Despite the high prevalence of ANCA especially the atypical variant in SLE, they probably represent only one of the wide repertoire of autoantibodies found in this disease. Routine testing for ANCA in lupus patients is therefore not recommended.
  8. Shaharir SS, Remli R, Marwan AA, Said MS, Kong NCT
    Lupus, 2013 Apr;22(5):492-6.
    PMID: 23435619 DOI: 10.1177/0961203313478303
    INTRODUCTION:Posterior reversible encephalopathy syndrome (PRES) is a rare neurological disorder which is increasingly recognized to occur in systemic lupus erythematosus (SLE).
    OBJECTIVE: The purpose of this study was to identify the characteristics of SLE patients with PRES and the associated factors of the poor outcome among them.
    METHODS: We investigated SLE patients who developed PRES between 2005-2011 at the Universiti Kebangsaan Malaysia Medical Centre. A comprehensive literature search was done to find all published cases of PRES in SLE. Pooled analysis was conducted to identify the factors associated with poor outcome.
    RESULTS: There were 103 cases of PRES in SLE published in the literature but only 87 cases were included in the analysis in view of incomplete individual data in the remaining cases. The majority of the cases were Asians (74.2%), female (95.4%) with mean age of 26.3 ± 8.8 years. PRES was highly associated with active disease (97.5%), hypertension (91.7%) and renal involvement (85.1%). We found that 79 patients had a full recovery (90.8%) with a mean onset of full clinical recovery in 5.6 ± 4.1 days. On univariate analysis and logistic regression analysis the predictors of poor outcome, defined as incomplete clinical recovery or death, were intracranial hemorrhage, odds ratio (OR) 14 (1.1-187.2), p=0.04 and brainstem involvement in PRES, OR 10.9 (1.3-90.6), p=0.003.
    CONCLUSION: Intracranial hemorrhage and brainstem involvement were the two important predictors of poor outcome of PRES. Larger prospective studies are needed to further delineate the risk of poor outcome among them.
  9. Azizah MR, Ainoi SS, Kuak SH, Kong NCT, Normaznah Y, Rahim MN
    Asian Pac J Allergy Immunol, 2001 Jun;19(2):93-100.
    PMID: 11699726
    The frequency of the HLA class II antigens/alleles (HLA-DR, DQ and DP) were studied in 70 Malaysian Chinese patients with systemic lupus erythematosus (SLE) to examine the contribution of these genes to disease susceptibility, their clinical expression and Immunological responses. This was done using modified PCR-RFLP technique. These samples were then compared with 66 ethnically matched controls. We found a strong association of the DQA1*0102 (p corr = 0.032, rr = 3.39), DQB1*0501 (p corr = 0.003, rr = 4.55), *0601 (p corr = 0.006, rr = 4.22) and DPB1* 0901(p corr = 0.02, rr = 4.58) with SLE. Clinically, we found a strong association of DR2 and DQA1*0301 with renal involvement and DQA1*0102 with alopecia. Immunologically, statistical analysis (Chi-square test ) showed a strong association of DQA1*0102 with anti-Ro/La antibodies while DQA1*0301 was observed to be strongly associated with antibodies to ds DNA. DQA1*0102 was found more frequently in those with a later disease onset (30 years of age or above). From these data we suggest that the HLA class II genes play a role in conferring disease susceptibility and clinical and immunological expression.
    Study site: SLE clinics, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
  10. Azizah MR, Ainol SS, Kong NCT, Normaznah Y, Rahim MN
    Med J Malaysia, 2001 Sep;56(3):302-7.
    PMID: 11732074
    An analysis of the clinical and serological features of 12 male and 122 female patients with SLE was done to determine whether sex related differences exist. We found a lower incidence of mucocutaneous symptoms and arthritis but an increased incidence of discoid lesions, pleuritis and pericarditis in males at disease onset. During the disease course, there was a lower incidence of arthritis, a similar prevalence of mucocutaneous symptoms but an increased incidence of pleuritis in males with a trend towards renal involvement. These findings were however not statistically significant except for the higher incidence of thrombosis among males. Serologically, both groups showed similar frequencies of autoantibodies and hypocomplementaemia. Although the study was small, it was shown that several sex-related differences in the clinical and serological features exist in Malaysian SLE patients.
    Study site: SLE Clinic, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
  11. Azizah MR, Ainol SS, Kong NCT, Normaznah Y, Rahim MN
    Korean J. Intern. Med., 2001 Jun;16(2):123-31.
    PMID: 11590899 DOI: 10.3904/kjim.2001.16.2.123
    BACKGROUND: Studies have shown that certain genes within the major histocompatibility complex predispose to systemic lupus erythematosus (SLE) and may influence clinical and autoantibody expression. Thus, we studied the frequency of HLA-DR, -DQA, -DQB and -DPB alleles in ethnic Malays with SLE to determine the role of these genes in determining disease susceptibility and their association with clinical and immunological manifestations.
    METHODS: Fifty-six Malay SLE patients were enrolled into the study. Demographic, clinical and immunological findings were obtained from medical records. HLA-DR, DQ and DP typing were done using modified PCR-RELP. Controls were from ethnically-matched healthy individuals.
    RESULTS: We found a strongly significant association of the DR2 and DQB1 *0501 and DQB1*0601 (pcorr = 0.03, rr = 3.83, pcorr = 0.0036, rr = 4.56 and pcorr = 0.0048 and rr = 6.0, respectively). There was also a weak increase of DQB1*0.201 and DPB1*0.0901 with a weak decrease of DQA1*0601 and DQB1*0503 and *0301 which were not significant after corrections for multiple comparisons were made. There was a significant positive association of DR2 and DQB1*0501 with renal involvement and DR8 with alopecia. A nonsignificant increase of DQB1*0503 in patients with photosensitivity was noted. Significant autoantibody associations were also found: DQB1*0601 with anti-Sm/RNP, DR2 with antiSSA (Ro)/SSB (La), and DR2, DQB1*0501 and *0601 with antibodies to ds DNA. There was no specific DR, DQ or DP associations with age of disease onset (below 30 years or those at or above 30 years).
    CONCLUSION: Our data suggests the role of the HLA class II genes in conferring SLE susceptibility and in clinical and autoantibody expression.
    Study site: SLE Clinic, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
  12. Kong NCT, Cheong IKS, Chong SM, Suleiman AB, Morad Z, Lajin I, et al.
    Med J Malaysia, 1988 Sep;43(3):200-5.
    PMID: 3241577
    Between 1980-1986, 219 renal biopsies were performed on patients with lupus nephritis (LN) presenting at the General Hospital, Kuala Lumpur. There were 172 (78.5%) females and 47 (21.5%) males. The ethnic distribution of 48.4% Malays, 46.1% Chinese and 5.5% Indians reflected their proportional composition in the general population. Peak incidence (40.6%) of cases occurred in the third decade of life (20-29 group) followed by 26.5% and 20.1% in the second and fourth decades respectively. The median age was 24 for females and 27 for males. In both sexes, nephrotic syndrome was the commonest mode of presentation (62.2%) followed by proteinuria (20.5%). Acute oliguric renal failure occurred in 11 patients (5%) and 8 of these showed crescentic glomerulonephritis with more than 50% crescents. The commonest histological picture was diffuse proliferative LN (WHO Stage IV-44.7%) which included 70% (19/27) of those with crescentic disease. This was followed by membranous LN (28.8%) of which 6 (all males) had crescentic disease. 7 (12.3%) of our patients had crescentic nephritis with a female to male distribution of 14: 13, suggesting either more aggressive disease or delayed diagnosis in males.
    Key words - Renal biopsies, lupus nephritis, nephrotic syndrome, proteinuria.
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