1.Comprehensive characterization of genomic features and clinical outcomes following targeted therapy and secondary cytoreductive surgery in OCCC: a single center experience
Silvana Talisa WIJAYA ; Natalie YL NGOI ; Jerold WZ LOH ; Tuan Zea TAN ; Diana LIM ; Irfan Sagir KHAN ; Yee Liang THIAN ; Alexa LAI ; Bertrand WL ANG ; Pearl TONG ; Joseph NG ; Jeffrey JH LOW ; Arunachalam ILANCHERAN ; Siew Eng LIM ; Yi Wan LIM ; David SP TAN
Journal of Gynecologic Oncology 2024;35(5):e69-
Objective:
Ovarian clear cell carcinoma (OCCC) is associated with chemoresistance. Limited data exists regarding the efficacy of targeted therapies such as immune checkpoint inhibitors (ICI) and bevacizumab, and the role of secondary cytoreductive surgery (SCS).
Methods:
We retrospectively analyzed genomic features and treatment outcomes of 172 OCCC patients treated at our institution from January 2000 to May 2022. Next-generation sequencing (NGS) was performed where sufficient archival tissue was available.
Results:
64.0% of patients were diagnosed at an early stage, and 36.0% at an advanced stage.Patients with advanced/relapsed OCCC who received platinum-based chemotherapy plus bevacizumab followed by maintenance bevacizumab had a median first-line progressionfree survival (PFS) of 12.2 months, compared with 9.3 months for chemotherapy alone (hazard ratio=0.69; 95% confidence interval [CI]=0.33, 1.45). In 27 patients who received an ICI, the overall response rate was 18.5% and median duration of response was 7.4 months (95% CI=6.5, 8.3). In 17 carefully selected patients with fewer than 3 sites of relapse, median PFS was 35 months (95% CI=0, 73.5) and median overall survival was 96.8 months (95% CI=44.6, 149.0) after SCS. NGS on 58 tumors revealed common mutations in ARID1A (48.3%), PIK3CA (46.6%), and KRAS (20.7%). Pathogenic alterations in PIK3CA, FGFR2, and NBN were associated with worse survival outcomes. Median tumor mutational burden was 3.78 (range, 0–16). All 26 patients with available loss of heterozygosity (LOH) scores had LOH <16%.
Conclusion
Our study demonstrates encouraging outcomes with bevacizumab and ICI, and SCS in select relapsed OCCC patients. Prospective trials are warranted.
2.Comprehensive characterization of genomic features and clinical outcomes following targeted therapy and secondary cytoreductive surgery in OCCC: a single center experience
Silvana Talisa WIJAYA ; Natalie YL NGOI ; Jerold WZ LOH ; Tuan Zea TAN ; Diana LIM ; Irfan Sagir KHAN ; Yee Liang THIAN ; Alexa LAI ; Bertrand WL ANG ; Pearl TONG ; Joseph NG ; Jeffrey JH LOW ; Arunachalam ILANCHERAN ; Siew Eng LIM ; Yi Wan LIM ; David SP TAN
Journal of Gynecologic Oncology 2024;35(5):e69-
Objective:
Ovarian clear cell carcinoma (OCCC) is associated with chemoresistance. Limited data exists regarding the efficacy of targeted therapies such as immune checkpoint inhibitors (ICI) and bevacizumab, and the role of secondary cytoreductive surgery (SCS).
Methods:
We retrospectively analyzed genomic features and treatment outcomes of 172 OCCC patients treated at our institution from January 2000 to May 2022. Next-generation sequencing (NGS) was performed where sufficient archival tissue was available.
Results:
64.0% of patients were diagnosed at an early stage, and 36.0% at an advanced stage.Patients with advanced/relapsed OCCC who received platinum-based chemotherapy plus bevacizumab followed by maintenance bevacizumab had a median first-line progressionfree survival (PFS) of 12.2 months, compared with 9.3 months for chemotherapy alone (hazard ratio=0.69; 95% confidence interval [CI]=0.33, 1.45). In 27 patients who received an ICI, the overall response rate was 18.5% and median duration of response was 7.4 months (95% CI=6.5, 8.3). In 17 carefully selected patients with fewer than 3 sites of relapse, median PFS was 35 months (95% CI=0, 73.5) and median overall survival was 96.8 months (95% CI=44.6, 149.0) after SCS. NGS on 58 tumors revealed common mutations in ARID1A (48.3%), PIK3CA (46.6%), and KRAS (20.7%). Pathogenic alterations in PIK3CA, FGFR2, and NBN were associated with worse survival outcomes. Median tumor mutational burden was 3.78 (range, 0–16). All 26 patients with available loss of heterozygosity (LOH) scores had LOH <16%.
Conclusion
Our study demonstrates encouraging outcomes with bevacizumab and ICI, and SCS in select relapsed OCCC patients. Prospective trials are warranted.
3.Comprehensive characterization of genomic features and clinical outcomes following targeted therapy and secondary cytoreductive surgery in OCCC: a single center experience
Silvana Talisa WIJAYA ; Natalie YL NGOI ; Jerold WZ LOH ; Tuan Zea TAN ; Diana LIM ; Irfan Sagir KHAN ; Yee Liang THIAN ; Alexa LAI ; Bertrand WL ANG ; Pearl TONG ; Joseph NG ; Jeffrey JH LOW ; Arunachalam ILANCHERAN ; Siew Eng LIM ; Yi Wan LIM ; David SP TAN
Journal of Gynecologic Oncology 2024;35(5):e69-
Objective:
Ovarian clear cell carcinoma (OCCC) is associated with chemoresistance. Limited data exists regarding the efficacy of targeted therapies such as immune checkpoint inhibitors (ICI) and bevacizumab, and the role of secondary cytoreductive surgery (SCS).
Methods:
We retrospectively analyzed genomic features and treatment outcomes of 172 OCCC patients treated at our institution from January 2000 to May 2022. Next-generation sequencing (NGS) was performed where sufficient archival tissue was available.
Results:
64.0% of patients were diagnosed at an early stage, and 36.0% at an advanced stage.Patients with advanced/relapsed OCCC who received platinum-based chemotherapy plus bevacizumab followed by maintenance bevacizumab had a median first-line progressionfree survival (PFS) of 12.2 months, compared with 9.3 months for chemotherapy alone (hazard ratio=0.69; 95% confidence interval [CI]=0.33, 1.45). In 27 patients who received an ICI, the overall response rate was 18.5% and median duration of response was 7.4 months (95% CI=6.5, 8.3). In 17 carefully selected patients with fewer than 3 sites of relapse, median PFS was 35 months (95% CI=0, 73.5) and median overall survival was 96.8 months (95% CI=44.6, 149.0) after SCS. NGS on 58 tumors revealed common mutations in ARID1A (48.3%), PIK3CA (46.6%), and KRAS (20.7%). Pathogenic alterations in PIK3CA, FGFR2, and NBN were associated with worse survival outcomes. Median tumor mutational burden was 3.78 (range, 0–16). All 26 patients with available loss of heterozygosity (LOH) scores had LOH <16%.
Conclusion
Our study demonstrates encouraging outcomes with bevacizumab and ICI, and SCS in select relapsed OCCC patients. Prospective trials are warranted.
4.Management of central airway obstruction.
Jeffrey Shuen Kai NG ; Kay Choong SEE
Singapore medical journal 2023;64(8):508-512
7.A Case Of Atrial Fibrillation In An Elderly Patient With Recurrent Falls And Dementia
Li Yan Ng ; Jeffrey Song&rsquo ; En Jiang
The Singapore Family Physician 2020;46(7):43-47
A case study highlighting the complexity in the management of newly diagnosed atrial fibrillation in an elderly female with recurrent falls and a lack of mental capacity. This demonstrates a delicate balance between reducing thromboembolic phenomenon and bleeding risks.
8.Consensus Guidelines in Usage of Biologics in Dermatology during COVID-19 Pandemic: Biologic Advisory Group Malaysia
Steven Kim Weng Chow ; Siew Eng Choon ; Chan Lee Chin ; Noor Zalmy Azizan ; Pubalan Muniandy ; Henry Boon Bee Foong ; Agnes Yoke Hui Heng ; Benji Tze Yuen Teoh ; Felix Boon Bin Yap ; Wooi Chiang Tan ; Peter Wee Beng Ch&rsquo ; ng ; Kwee Eng Tey ; Latha Selvarajah ; Suganthi Thevarajah
Malaysian Journal of Dermatology 2020;45(2):2-10
The aim of this Biologic Advisory Group (BAG)
Malaysia consensus guideline is to provide
clinicians managing cutaneous diseases with
biologics relevant parameters to consider prior to
initiating or stopping or continuing any biologic
treatment in the current landscape of the COVID-19
pandemic. Besides reviewing the medical literatures
on COVID-19 and evidences related to other
human coronavirus or influenza, expert opinions
and clinical experiences are shared and debated in
formulation of this biologic consensus guideline.
9.A web-based educational intervention module to improve knowledge and attitudes towards thalassaemia prevention in Malaysian young adults
Chin Fang Ngim ; Hishamshah Ibrahim ; Nisah Abdullah ; Nai Ming Lai ; Ronnie Kian Meng Tan ; Chen Siew Ng ; Amutha Ramadas
The Medical Journal of Malaysia 2019;74(3):219-225
Background: Thalassaemia is a public health burden in
Malaysia and its prevention faces many challenges. In this
study, we aimed to assess the effectiveness of a web-based
educational module in improving knowledge and attitudes
about thalassaemia prevention amongst Malaysian young
adults.
Methods: We designed an interactive web-based
educational module in the Malay language wherein videos
were combined with text and pictorial visual cues.
Malaysians aged 18-40 years old who underwent the module
had their knowledge and attitudes assessed at baseline,
post-intervention and at 6-month follow-up using a selfadministered validated questionnaire.
Results: Sixty-five participants: 47 Malays (72.3%), 15
Chinese (23.1%), three Indians (4.6%) underwent the module.
Questionnaires were completed at baseline (n=65), postintervention (n=65) and at 6-month follow-up (n=60). Out of a
total knowledge score of 21, significant changes were
recorded across three time-points- median scores were 12 at
pre-intervention, 19 at post-intervention and 16 at 6-month
follow-up (p<0.001). Post-hoc testing comparing preintervention and 6-month follow-up scores showed
significant retention of knowledge (p<0.001). Compared to
baseline, attitudes at 6-month follow-up showed an
increased acceptance for “marriage avoidance between
carriers” (pre-intervention 20%, 6-month follow-up 48.3%,
p<0.001) and “prenatal diagnosis” (pre-intervention 73.8%,
6-month follow-up 86.2%, p=0.008). Acceptance for selective
termination however, remained low without significant
change (pre-intervention 6.2%, 6-month follow-up 16.7%,
p=0.109).
Conclusion: A web-based educational module appears
effective in improving knowledge and attitudes towards
thalassaemia prevention and its incorporation in
thalassaemia prevention programs is potentially useful in
Malaysia and countries with a high internet penetration rate.


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