1.Maintenance of pegylated liposomal doxorubicin/carboplatin in patients with advanced ovarian cancer: randomized study of an Asian Gynecologic Oncology Group
Chyong-Huey LAI ; Elizabeth VALLIKAD ; Hao LIN ; Lan-Yan YANG ; Shih-Ming JUNG ; Hsueh-Erh LIU ; Yu-Che OU ; Hung-Hsueh CHOU ; Cheng-Tao LIN ; Huei-Jean HUANG ; Kuan-Gen HUANG ; Jiantai QIU ; Yao-Ching HUNG ; Tzu-I WU ; Wei-Yang CHANG ; Kien-Thiam TAN ; Chiao-Yun LIN ; Angel CHAO ; Chee-Jen CHANG
Journal of Gynecologic Oncology 2020;31(1):e5-
Objectives:
An Asian Gynecologic Oncology Group phase III randomized trial was conducted to determine whether maintenance chemotherapy could improve progression-free survival (PFS) in stages III/IV ovarian cancer.
Methods:
Between 2007 and 2014, 45 newly-diagnosed ovarian cancer patients were enrolled after complete remission and randomized (1:1) to arm A (4-weekly carboplatin area under the curve 4 and pegylated liposomal doxorubicin [PLD] 30 mg/m2, n=24) for 6 cycles or arm B (observation, n=21). The primary end-point was PFS. A post hoc translational study was conducted to deep sequence BRCA/homologous recombination deficiency (HRD) genes, because BRCA/HRD mutations (BRCA/HRDm) are known to be associated with better prognosis.
Results:
Enrollment was slow, accrual was closed when 7+ years had passed. With a medianfollow-up of 88.9 months, the median PFS was significantly better in arm A (55.5 months) than arm B (9.2 months) (hazard ratio [HR]=0.40; 95% confidence interval [CI]=0.19–0.87; p=0.020), yet the median overall survival was not significantly different in arm A (not reached) than arm B (95.1 months) (p=0.148). Overall grade 3/4 adverse events were more frequent in arm A than arm B (60.9% vs 0.0%) (p<0.001). Quality of life was generally not significantly different. Distribution of BRCA1/2m or BRCA/HRDm was not significantly biased between the two arms. Wild-type BRCAon-HRD subgroup seemed to fare better with maintenance therapy (HR=0.35; 95% CI=0.11–1.18; p=0.091).
Conclusions
Despite limitations in small sample size, it suggests that maintenance carboplatin-PLD chemotherapy could improve PFS in advanced ovarian cancer.
2.Influence of bariatric surgery on weight reduction and control of chronic disease among obese patients in Malaysia
Tan Kar Choon ; Chee Tao Chang ; Cheah Wee Kooi ; Rajkumar Vinayak ; Huan Keat Chan
The Medical Journal of Malaysia 2019;74(3):215-218
Introduction: This study was designed to determine the
influence of bariatric surgery on changes in the body mass
index (BMI), and the control of diabetes, hypertension and
dyslipidaemia among obese patients in Malaysia.
Materials And Methods: This was a retrospective cohort
study undertaken at a public tertiary care centre in the state
of Perak, Malaysia. Information of obese patients who
underwent bariatric surgery was obtained from their medical
records. The changes in the BMI, HbA1C, systolic and
diastolic blood pressure (SBP and DBP), and lipid levels
between three months before and after the surgery were
assessed.
Results: The patients (n=106) were mostly Malay (66.0%),
had at least one comorbidity (61.3%), and had a mean age of
40.38±11.75 years. Following surgery, the BMI of the patients
was found to reduce by 9.78±5.82kg/m2. For the patients
who had diabetes (n=24) and hypertension (n=47), their
mean HbA1C, SBP and DBP were also shown to reduce
significantly by 2.02±2.13%, 17.19±16.97mmHg, and
11.45±12.63mmHg, respectively. Meanwhile, the mean total
cholesterol, triglyceride and low-density lipoprotein levels of
those who had dyslipidaemia (n=21) were, respectively,
lowered by 0.91±1.18mmol/L, 0.69±1.11mmol/L and
0.47±0.52mmol/L.
Conclusion: The findings suggest that in addition to weight
reduction, bariatric surgery is helpful in improving the
diabetes, hypertension and dyslipidaemia control among
obese patients. However, a large-scale trial with a control
group is required to verify our findings
3.The quality of escalator signage for public safety in Malaysia:an observational study
Chew CHII-CHII ; Chang CHEE-TAO ; Lim XIN-JIE ; Ibrahim HASNI-ADHA ; Azmi HAMIAZWA ; Wahabi NUR-ILYANA ; Hamdan NUR-SHUHAIDA ; Nazan NURUL-ATIQAH ; Karim NUR-HALIANA ; Malawi NURFARAHDILA-AHMAD ; Oon YING-LING ; MS NORSHAZILA-JULIA ; HSS AMAR-SINGH
Global Health Journal 2021;5(4):198-203
Objective:Escalator signage could be playing a vital role to alert users for safe use of escalators.This study aimed to evaluate the availability,standardization,and content of safety information on escalator signage in the shopping malls.Methods:An observational study was conducted from November 2017 to February 2018 to assess the availability,standardization of safety information among the signage inside the shopping mall,and the content of safety information for public safety in Malaysia.A checklist was developed by adapting escalator safety guidelines from seven countries and regions including Malaysia.Data collectors identified from the selected states were required to capture three photographs at different angles of the escalator signage for each ascending and descending directions at each entrance of the mall.Descriptive analysis was performed;each criterion was presented in frequency and percentage.Results:A total of 268 escalators from 84 shopping malls in 9 states of Malaysia were assessed.Two operating escalators were not equipped with signage.More than one-fifth (23.0%) of the signage was not standardized within the mall.The majority of safety information was displayed in the form of a pictogram,a minority of signage displayed information in both pictogram and text format:"children must hold hand" (12.7%) and "be careful of long clothing" (10.8%),respectively.Nevertheless,"toddlers should be carried" (8.6%) and "take extra care with rubber shoes/tied shoes/laces" (30.2%) were found absent in most of the signage.Conclusion:Escalator signage was present in almost all of the escalators observed.However,non-standardization of the signage of escalators should warrant the attention of relevant authorities to revise the safety guidelines and improve the quality of escalator.
4.Maintenance of pegylated liposomal doxorubicin/carboplatin in patients with advanced ovarian cancer: randomized study of an Asian Gynecologic Oncology Group
Chyong Huey LAI ; Elizabeth VALLIKAD ; Hao LIN ; Lan Yan YANG ; Shih Ming JUNG ; Hsueh Erh LIU ; Yu Che OU ; Hung Hsueh CHOU ; Cheng Tao LIN ; Huei Jean HUANG ; Kuan Gen HUANG ; Jiantai QIU ; Yao Ching HUNG ; Tzu I WU ; Wei Yang CHANG ; Kien Thiam TAN ; Chiao Yun LIN ; Angel CHAO ; Chee Jen CHANG
Journal of Gynecologic Oncology 2020;31(1):5-
5.One-Year Outcomes of Two-Week Double-Dose Clopidogrel Treatment following Percutaneous Coronary Intervention in a State General Hospital in Malaysia
Doris George ; Chang Chee Tao ; Kumutha Kumarasamy ; Asri Ranga
Malaysian Journal of Medicine and Health Sciences 2020;16(No.2):187-192
Introduction: Previous studies reported that a two-week double-dose clopidogrel treatment following percutaneous coronary intervention has no difference in safety compared to standard therapy. This study aimed to determine the all-cause readmission rate and survival after a year of percutaneous coronary intervention (PCI) in patients who were treated with two-week double-dose clopidogrel regimen. Methods: This was a retrospective study on patients who underwent PCI in a state general hospital in Malaysia in 2014. Patients’ one month and one-year survival status were retrieved using the hospital electronic patient management system. Patients who received a two-week course of 150mg clopidogrel and subsequently a one-year course of standard double antiplatelet therapy were included. Results: A total of 381 out of 563 patients who underwent PCI were included in the analysis, while those who were switched to ticagrelor and transferred to other hospitals post-PCI excluded. Patients had a mean age of 56.9 (SD 10.7), with majority male (331, 86.9%) and Malay (144, 37.8%). The PCI was mainly indicated for ST-elevated myocardial infarction (188, 49.3%), non-STEMI (114, 29.9%) and unstable angina (36, 9.4%). A total of 107 (28.1%) patients were readmitted within the one year post-PCI period. Readmissions were mainly due to ACS (55.5%) and bleeding events (2.4%). The 30-day and 1-year all-cause mortality was 33 cases and 43 cases, respectively. Conclusion: The low readmission and bleeding related readmission suggested that the two-week double-dose clopidogrel regimen was safe for the post PCI patients. Future randomised trial to establish the efficacy of this dosing regimen is therefore warranted.
6.Knowledge and Perceptions of Blood Safety among Blood Donors in Kelantan, Malaysia
Pei Pei Tan ; Hafizuddin Mohamed Fauzi ; Rosnah Bahar ; Chee Tao Chang ; Nur Arzuar Abdul Rahim
Malaysian Journal of Medical Sciences 2019;26(6):127-136
Background: Unsafe blood products may cause transfusion-transmissible infections. This
study aimed to evaluate the knowledge and perceptions of blood donors regarding blood safety.
Methods: This was a cross-sectional study conducted in the Kelantan state of Malaysia.
The questionnaire comprised 39 questions that covered areas such as donors’ social demographic
information, knowledge of transfusion-transmitted diseases, blood screening and donor eligibility
and perceptions towards blood safety. The knowledge score was categorised as good or poor.
Results: Of the 450 distributed questionnaires, 389 were suitable for analysis. Only
18.5% of the donors had good knowledge, with 81.5% having poor knowledge. Less than 30% were
aware that people with multiple sexual partners, bisexual people and male homosexual people
are permanently deferred from blood donation. Only 29.4% agreed that donors are responsible if
their blood causes infection. Furthermore, 39.3% assumed that they could check their HIV status
through blood donation, and 10.3% and 5.4% of the respondents believed that donors are free from
infection if they wear a condom during sex or only have oral sex when involved in prostitution,
respectively.
Conclusion: Poor knowledge and notable misperceptions concerning safe blood donation
were found among blood donors. The Ministry of Health should incorporate safe blood education
in future public awareness programmes.
7.Bioequivalence and pharmacokinetic comparison of two fixed dose combination of Metformin/Glibenclamide formulations in healthy subjects under fed condition
Chang Chee Tao ; Ang Ju Ying ; Wong Jia Woei ; Tan Siew Siew ; Chin Siaw Kuen ; Lim Ai Beoy ; Tan Weng Hong ; Yuen Kah Hay
The Medical Journal of Malaysia 2020;75(3):286-291
Aim: This study is conducted to compare the
pharmacokinetic profiles of two fixed dose combination of
metformin/glibenclamide tablets (500mg/5 mg per tablet).
Materials and Methods: This is a single-center, single-dose,
open-label, randomized, 2-treatment, 2-sequence and 2-
period crossover study with a washout period of 7 days. All
28 adult male subjects were required to fast for at least 10
hours prior to drug administration and they were given
access to water ad libitum during this period. Thirty minutes
prior to dosing, all subjects were served with a standardized
high-fat and high-calorie breakfast with a total calorie of
1000 kcal which was in accordance to the EMA Guideline on
the Investigation of Bioequivalence. Subsequently, subjects
were administered either the test or reference preparation
with 240mL of plain water in the first trial period. During the
second trial period, they received the alternate preparation.
Plasma levels of glibenclamide and metformin were
analysed separately using two different high performance
liquid chromatography methods.
Results: The 90% confidence interval (CI) for the ratio of the
AUC0-t, AUC0-∞, and Cmax of the test preparation over
those of the reference preparation were 0.9693–1.0739,
0.9598– 1.0561 and 0.9220 – 1.0642 respectively. Throughout
the study period, no serious drug reaction was observed.
However, a total of 26 adverse events (AE)/side effects were
reported, including 24 that were definitely related to the
study drugs, namely giddiness (n=17), while diarrheoa (n=3),
headache (n=2) and excessive hunger (n=2) were less
commonly reported by the subjects.
Conclusion: It can be concluded that the test preparation is
bioequivalent to the reference preparation.
8.Potent and conditional redirected T cell killing of tumor cells using Half DVD-Ig.
Philip D BARDWELL ; Matthew M STARON ; Junjian LIU ; Qingfeng TAO ; Susanne SCESNEY ; Gail BUKOFZER ; Luis E RODRIGUEZ ; Chee-Ho CHOI ; Jennifer WANG ; Qing CHANG ; Feng DONG ; Cherrie DONAWHO ; Jieyi WANG ; Christine M GRINNELL ; Edit TARCSA ; Charles HUTCHINS ; Tariq GHAYUR ; Jijie GU
Protein & Cell 2018;9(1):121-129
Novel biologics that redirect cytotoxic T lymphocytes (CTLs) to kill tumor cells bearing a tumor associated antigen hold great promise in the clinic. However, the ability to safely and potently target CD3 on CTL toward tumor associated antigens (TAA) expressed on tumor cells remains a challenge of both technology and biology. Herein we describe the use of a Half DVD-Ig format that can redirect CTL to kill tumor cells. Notably, Half DVD-Ig molecules that are monovalent for each specificity demonstrated reduced non-specific CTL activation and conditional CTL activation upon binding to TAA compared to intact tetravalent DVD-Ig molecules that are bivalent for each specificity, while maintaining good drug like properties and appropriate PK properties.
Animals
;
Antibodies, Bispecific
;
immunology
;
Antibodies, Monoclonal
;
immunology
;
pharmacokinetics
;
CD3 Complex
;
metabolism
;
Cell Line, Tumor
;
Cytotoxicity, Immunologic
;
ErbB Receptors
;
metabolism
;
Female
;
Humans
;
Lymphocyte Activation
;
immunology
;
Mice, SCID
;
Neoplasms
;
immunology
;
pathology
;
Rats, Sprague-Dawley
;
T-Lymphocytes, Cytotoxic
;
immunology