1.Clinical outcome of patients with osteogenesis imperfecta on intravenous pamidronate treatment at the Philippine General Hospital from 2010-2018.
Cheryll MAGBANUA-CALALO ; Ebner Bon G. MACEDA ; Maria Melanie Liberty B. ALCAUSIN
Acta Medica Philippina 2025;59(Early Access 2025):1-7
BACKGROUND
Osteogenesis imperfecta (OI) is a group of connective tissue disease characterized by propensity to fractures following minimal trauma. OI is a lifelong inheritable disease and currently has no definitive cure. Management goals are directed towards prevention of fractures, controlling the symptoms, maximizing independent mobility, and developing optimal bone mass and muscle strength. Bisphosphonates are the mainstay of pharmacologic fracture-prevention therapy for most forms of OI. The University of the Philippines-Philippine General Hospital Bisphosphonate Treatment Program for OI was started in 2006 by the Clinical Genetics Service. For more than a decade now, the program has been serving more than 50 OI patients. This study evaluated the clinical outcomes of the patients who were included in the program to add to the body of knowledge on Filipino patients with OI.
OBJECTIVESThis study sought to determine the clinical outcomes of children with OI on intravenous pamidronate treatment at the Philippine General Hospital (PGH) from January 2010 to December 2018.
METHODSThe study utilized a retrospective review of medical records of 24 patients diagnosed with OI on pamidronate therapy seen at the PGH from January 2010 to December 2018. Descriptive statistics were used to summarize the demographic and baseline clinical characteristics of the patients. Median annualized fracture rates before and during treatment were calculated and compared. The patient functional mobility before and during pamidronate infusion was classified accordingly based on the Gross Motor Function Classification System (GMFCS) and were compared.
RESULTSTwenty-four patients, which include seven males and 17 females, with ages at the time of conduct of the study ranging from four years to 11 years, fulfilled the inclusion criteria. There were four patients with OI type I, six with OI type III, 11 with OI type IV and three with OI type V. The annualized long bone fracture rate decreased significantly from a median of 2.0/year (range 1-2.75) to 0.75/year (range 0-1) after more than a year on pamidronate infusion (pCONCLUSION
Cyclic intravenous pamidronate treatment in young children with moderate-severe OI is well tolerated and associated with reduced fracture frequency with a tendency to improvement of gross functional mobility.
Human ; Osteogenesis Imperfecta ; Bisphosphonate ; Diphosphonates
2.Predictive factors of transient congenital hypothyroidism among Filipino children: A retrospective study.
Lorna R. ABAD ; Ebner Bon G. MACEDA ; Angela Marie D. LEYCO ; Sylvia C. ESTRADA
Acta Medica Philippina 2025;59(Early Access 2025):1-10
BACKGROUND AND OBJECTIVE
Transient congenital hypothyroidism (TCH) refers to temporary deficiency of thyroid hormone identified after birth which later recovers to improved thyroxine production. Its prevalence in the Philippines has not been reported in a large-scale study. Its diagnosis remains difficult due to its numerous possible etiologies. Identifying the predictive factors of TCH may aid in earlier diagnosis and decreased risk of overtreatment. This study aimed to determine the predictive factors for TCH in children with congenital hypothyroidism (CH) detected by newborn screening (NBS) in the Philippines from January 2010 to December 2017.
METHODSIn this multicenter retrospective cohort study involving 15 NBS continuity clinics in the Philippines, medical records were reviewed, and clinical and laboratory factors were compared between children with TCH and those with permanent congenital hypothyroidism (PCH). Of the 2,913 children diagnosed with CH in the Philippines from 2010 to 2017, 1,163 (39.92%) were excluded from the study due to an unrecalled or lost to follow-up status, or a concomitant diagnosis of Down Syndrome.
RESULTSAmong the 1,750 patients included in analysis, 6.97% were diagnosed with TCH, 60.80% were female, mean gestational age at birth was 38 weeks, and mean birth weight was 2,841 grams. Confirmatory thyrotropin (TSH) was lower and confirmatory free thyroxine (FT4) was higher in the TCH group compared to those with PCH (TSH 32.80 vs 86.65 µIU/mL [pCONCLUSION
Of all the patients with confirmed congenital hypothyroidism via the newborn screening, 6.97% were diagnosed with transient CH. Factors associated with TCH are confirmatory TSH and FT4, L-thyroxine dose requirements, thyroid ultrasound findings, gestational age at birth, and a maternal history of thyroid illness.
Human ; Congenital Hypothyroidism ; Philippines ; Neonatal Screening ; Prevalence
3.Clinical, biochemical, and radiologic profiles of Filipino patients with 6-Pyruvoyl-Tetrahydrobiopterin Synthase (6-PTPS) deficiency and their neurodevelopmental outcomes.
Leniza G. DE CASTRO-HAMOY ; Ma. Anna Lourdes A. MORAL ; Loudella V. CALOTES-CASTILLO ; Mary Ann R. ABACAN ; Cynthia P. CORDERO ; Maria Lourdes C. PAGASPAS ; Ebner Bon G. MACEDA ; Sylvia C. ESTRADA ; Mary Anne D. CHIONG
Acta Medica Philippina 2025;59(3):39-44
BACKGROUND
Six-pyruvoyl-tetrahydrobiopterin synthase (6-PTPS) deficiency is an inherited metabolic disorder which results in tetrahydrobiopterin (BH4) deficiency causing hyperphenylalaninemia.
OBJECTIVEThis study aimed to describe the clinical, biochemical, and radiologic profiles, and neurologic and developmental outcomes of patients diagnosed with 6-pyruvoyl tetrahydrobiopterin (PTPS) deficiency through newborn screening and confirmed by BH4 loading test, pterin analysis, and gene sequencing who were following-up with the metabolic team.
METHODSThe research was a single-center descriptive case series study design that was done at the Philippine General Hospital, a tertiary government hospital. The clinical, biochemical, radiologic profiles and neurodevelopmental evaluation of each patient were described.
RESULTSNine patients from 1 year 2 months to 14 years 5 months of age were enrolled in the study. Clinical manifestations before treatment were hypotonia, poor suck, and seizure. The most common clinical manifestation even after treatment initiation was seizure. The mean phenylalanine level on newborn screening was 990.68 umol/L, but after treatment was started, mean levels ranged from 75.69 to 385.09 umol/L. Two of the patients had focal atrophy of the posterior lobe on brain imaging. Pathogenic variants on molecular analysis were all missense, with two predominant variants, c.155A>G and c.58T>C. Eight of the nine patients had varying degrees of developmental delay or intellectual disability, while the remaining patient had signs of a learning disorder.
CONCLUSIONNewborn screening has played a crucial role in the early identification and management of patients with hyperphenylalaninemia due to 6-PTPS deficiency. Confirmation of diagnosis through determination of DHPR activity, urine pterins and/or molecular analysis is necessary for appropriate management. However, despite early initiation of treatment, neurodevelopmental findings of patients with 6-PTPS deficiency were still unsatisfactory.
Human ; Infant: 1-23 Months ; Child Preschool: 2-5 Yrs Old ; Child: 6-12 Yrs Old ; Adolescent: 13-18 Yrs Old ; Learning Disorders ; Brain ; Diagnosis
4.Social media content analysis of public and private Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency facebook groups
Ebner Bon G. Maceda ; Michelle E. Abadingo ; Bubbles Beverly N. Asor ; Rizza Kaye C. Cases ; Renchillina Joy G. Supan ; Kia S. Anarna ; Patricia Carla A. Libo-on ; Theodore Delfin C. Vesagas ; Ma-Am Joy R. Tumulak
Acta Medica Philippina 2024;58(Early Access 2024):1-12
Background:
As social media continue to grow as popular and convenient tools for acquiring and disseminating health information, the need to investigate its utilization by laypersons encountering common medical issues becomes increasingly essential.
Objectives:
This study aimed to analyze the content posted in Facebook groups for Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency and how these engage the members of the group.
Methods:
This study employed an inductive content analysis of user-posted content in both public and private Facebook groups catering specifically to G6PD deficiency. The G6PD Facebook groups with 10 or more posts within the past 12 months were selected for this study. Data were harvested from posts and comments using ExportComment.
Results:
A total of 46 G6PD-related Facebook groups were identified. Of which, 19 were public and 27 were private groups, with an average membership of 5000-6000 accounts. After eligibility based on criteria and authorization for private groups, 3 public and 3 private groups were included, with the majority of these groups focused on sharing information. Five main themes of posted content were identified: diagnosis, management, beliefs, psychosocial factors, and medical requirements. “Diagnosis”-related posts referred to conversations about the causes and symptoms of G6PD, “management” referred to medication or diet, “beliefs” involved traditional or lay perceptions, “psychosocial factors” referred to posts that disclosed how psychosocial factors influenced G6PD deficiency practices, and “medical requirements” referred to documentation regarding
the condition. The bulk of these posts used three strategies for communication: information-requesting,
self-disclosure, and promotion of products/services. Information requests were the most common.
Conclusion
The results of the study showed opportunities and challenges in health education on G6PD, especially in evaluating the credibility and accuracy of the information given and received. Looking at the content and manner of communicating information noted, the newborn screening program may improve its advocacy and education campaign, and may develop targeted educational materials and effective dissemination strategies that could clarify, explain, or refute information and beliefs mostly shared on these platforms.
Glucosephosphate Dehydrogenase Deficiency
;
Self-Help Groups
5.Clinical, biochemical, and radiologic profiles of Filipino patients with 6-Pyruvoyl-Tetrahydrobiopterin Synthase (6-PTPS) deficiency and their neurodevelopmental outcomes
Leniza G. de Castro-Hamoy ; Ma. Anna Lourdes A. Moral ; Loudella V. Calotes-Castillo ; 1Mary Ann R. Abacan ; Cynthia P. Cordero ; Maria Lourdes C. Pagaspas ; Ebner Bon G. Maceda ; Sylvia C. Estrada ; Mary Anne D. Chiong
Acta Medica Philippina 2024;58(Early Access 2024):1-6
Background:
Six-pyruvoyl-tetrahydrobiopterin synthase (6-PTPS) deficiency is an inherited metabolic disorder which results in tetrahydrobiopterin (BH4) deficiency causing hyperphenylalaninemia.
Objective:
This study aimed to describe the clinical, biochemical, and radiologic profiles, and neurologic and developmental outcomes of patients diagnosed with 6-pyruvoyl tetrahydrobiopterin (PTPS) deficiency through newborn screening and confirmed by BH4 loading test, pterin analysis, and gene sequencing who were following-up with the metabolic team.
Methods:
The research was a single-center descriptive case series study design that was done at the Philippine General Hospital, a tertiary government hospital. The clinical, biochemical, radiologic profiles and neurodevelopmental evaluation of each patient were described.
Results:
Nine patients from 1 year 2 months to 14 years 5 months of age were enrolled in the study. Clinical manifestations before treatment were hypotonia, poor suck, and seizure. The most common clinical manifestation even after treatment initiation was seizure. The mean phenylalanine level on newborn screening was 990.68 umol/L, but after treatment was started, mean levels ranged from 75.69 to 385.09 umol/L. Two of the patients had focal atrophy of the posterior lobe on brain imaging. Pathogenic variants on molecular analysis were all missense, with two predominant variants, c.155A>G and c.58T>C. Eight of the nine patients had varying degrees of developmental delay or intellectual disability, while the remaining patient had signs of a learning disorder.
Conclusion
Newborn screening has played a crucial role in the early identification and management of patients with hyperphenylalaninemia due to 6-PTPS deficiency. Confirmation of diagnosis through determination of DHPR activity, urine pterins and/or molecular analysis is necessary for appropriate management. However, despite early initiation of treatment, neurodevelopmental findings of patients with 6-PTPS deficiency were still unsatisfactory.
6.Social media content analysis of public and private Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency Facebook groups
Ebner Bon G. Maceda ; Michelle E. Abadingo ; Bubbles Beverly N. Asor ; Rizza Kaye C. Cases ; Renchillina Joy G. Supan ; Kia S. Anarna ; Patricia Carla A. Libo-on ; Theodore Delfin C. Vesagas ; Ma-am Joy R. Tumulak
Acta Medica Philippina 2024;58(22):65-76
BACKGROUND
As social media continue to grow as popular and convenient tools for acquiring and disseminating health information, the need to investigate its utilization by laypersons encountering common medical issues becomes increasingly essential.
OBJECTIVESThis study aimed to analyze the content posted in Facebook groups for Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency and how these engage the members of the group.
METHODSThis study employed an inductive content analysis of user-posted content in both public and private Facebook groups catering specifically to G6PD deficiency. The G6PD Facebook groups with 10 or more posts within the past 12 months were selected for this study. Data were harvested from posts and comments using ExportComment.
RESULTSA total of 46 G6PD-related Facebook groups were identified. Of which, 19 were public and 27 were private groups, with an average membership of 5000-6000 accounts. After eligibility based on criteria and authorization for private groups, 3 public and 3 private groups were included, with the majority of these groups focused on sharing information. Five main themes of posted content were identified: diagnosis, management, beliefs, psychosocial factors, and medical requirements. “Diagnosis”-related posts referred to conversations about the causes and symptoms of G6PD, “management” referred to medication or diet, “beliefs” involved traditional or lay perceptions, “psychosocial factors” referred to posts that disclosed how psychosocial factors influenced G6PD deficiency practices, and “medical requirements” referred to documentation regarding the condition. The bulk of these posts used three strategies for communication: information-requesting, self-disclosure, and promotion of products/services. Information requests were the most common.
CONCLUSIONThe results of the study showed opportunities and challenges in health education on G6PD, especially in evaluating the credibility and accuracy of the information given and received. Looking at the content and manner of communicating information noted, the newborn screening program may improve its advocacy and education campaign, and may develop targeted educational materials and effective dissemination strategies that could clarify, explain, or refute information and beliefs mostly shared on these platforms.
Glucosephosphate Dehydrogenase Deficiency ; Self-help Groups ; Social Media
7.Telegenetics services in a tertiary hospital: Utility and patient satisfaction
Irish Alysa V. Herlao, RN, MPM ; Ebner Bon G. Maceda, MD ; Mary Ann R. Abacan, MD, MSc ; Leniza G. de Castro-Hamoy, MD, MSGS ; Maria Melanie Liberty B. Alcausin, MD
Acta Medica Philippina 2023;57(8):5-14
Background:
Telegenetics has been a very useful platform to continue the different services offered by the clinical genetics team especially during the COVID-19 pandemic, when this mode of care had been maximized.
Objective:
This paper aimed to present the process of telegenetics in a tertiary hospital and the feedback for this service through patient satisfaction surveys.
Methods:
Telegenetics consultation is divided into three phases: pre-consultation, consultation, and post-consultation. Patient satisfaction in the delivery of genetics services were obtained through a survey answered by patients/caregivers after telegenetics consultation. Ratings of patient satisfaction on telegenetics consultation during the pandemic (September 2020 to February 2021) were compared from that of face-to-face consultations before the pandemic (September 2019 to February 2020).
Results:
In 2020, there were a total of 1,228 consultations made via telegenetics. Of which, 319 consultations were for the metabolic service, 138 for dysmorphology, 207 for genetic counseling, and 564 for dietary counseling. New patients comprised 13.84% of the consultations and 86.16% were from follow-up patients. In 2021, there were a total of 3,124 consultations made via telegenetics. Of which, 617 consultations were for the metabolic service, 688 for dysmorphology, 961 for genetic counseling, and 858 for dietary counseling. New patients comprised 12.93% of the consultations and 87.07% were from follow-up patients. Over a period of 6 months, pre-pandemic (face-to-face consultation) and pandemic (telegenetics) patient satisfaction survey results showed no significant difference on the results for both new patient consultations and follow-up patient consultations that is a standard satisfactory rating of at least 3 (satisfactory) on customer satisfaction by more than 70% of the respondents.
Conclusion
Patient satisfaction ratings on the utility of telegenetics was comparable to that of face-to-face
consultations. Its use has shown benefits like cost-effectiveness, time efficiency, improved accessibility, and
psychological benefits as some patients fear a hospital setting during the pandemic. It also has limitations like possible technical difficulties during consultations and limited opportunity for physical examination, establishing rapport, and exploring psychosocial issues. Hence it is important to consider the possibility of a telegenetics consultation as an alternative to a face-to-face consultation.
Patient Satisfaction
8.Acceptance, knowledge, and experiences of Pediatric Hematologists in the Philippines on newborn screening for hemoglobinopathies
Reynaldo C. de Castro Jr., MD ; Ebner Bon G. Maceda, MD ; Maria Melanie Liberty B. Alcausin, MD
Acta Medica Philippina 2023;57(7):51-55
Background:
Hemoglobinopathies as a group is one of the most common conditions confirmed through the newborn screening (NBS) program of the Philippines. This led to the increased participation of pediatric hematologists in the NBS program.
Objective:
The aim of the study was to assess newborn screening acceptance and knowledge of pediatric hematologists using an online questionnaire.
Method:
Members of the Philippine Society of Pediatric Hematology (PSPH), who are practicing pediatric hematologists in the Philippines, were invited to answer an online questionnaire.
Results:
Sixty members of the PSPH (65.2%) answered the survey. All the respondents are familiar with the newborn screening program. Fifty-seven respondents (95 %) have already managed a case of hemoglobinopathy identified through the newborn screening program. Differences in the approach to management and level of confidence with diagnostic test result interpretation have been noted. General themes of their concerns include being unaware of the protocol, concerns on delays in confirmatory tests, request for guidelines on follow-up, and incongruence of results with clinical picture.
Conclusion
The information collected may be used to develop strategies to better equip our pediatric hematologists and assist the PSPH standardize management protocols for hemoglobinopathies.
hemoglobinopathies
;
newborn screening
9.Berardinelli-Seip Congenital Lipodystrophy in a Filipino child.
Ebner Bon G. MACEDA ; Charlotte Averill Y. TAN ; Jeanne Ruth U. BASAS ; Mary Ann R. ABACAN
Acta Medica Philippina 2022;56(3):137-142
Berardinelli-Seip Congenital Lipodystrophy (BSCL) is an autosomal recessive inborn error of the common pathway of acylglycerol and phospholipid synthesis. Patients with this condition present with generalized lipoatrophy, hepatomegaly, acromegalic features, hypertrichosis, and developmental delay. But on workup, they may also be discovered to have hypertriglyceridemia with or without hypercholesterolemia and insulin resistance. A high index of suspicion is required for diagnosis which may have implications in management. Here we present a 5-year old male with clinical features of BSCL. BSCL2 gene sequencing done showed a homozygous c.782dupG, p.(Ile262Hisfs*12) sequence alteration, classified as pathogenic, hence, confirming the diagnosis of BSCL. This is the first reported case in the Philippines.
Key Words: Berardinelli-Seip Congenital Lipodsytrophy, insulin resistance
10.Satellite clinics of the Newborn Screening Continuity Clinic - Region 6: Establishment of a Community-Based Networking System in Western Visayas, Philippines
Renilyn P. Reyes ; Karen June V. Ventilacion ; Grace C. Panes-Exmundo ; Florence Osano ; Karen Asuncion R. Panol ; Frederick David E. Beltran ; Michelle E. Abadingo ; Ebner Bon G. Maceda ; Carmencita D. Padilla
Philippine Journal of Health Research and Development 2022;26(4):55-62
Background:
With the increasing coverage of the newborn screening (NBS) program in the Philippines, the number of patients being followed-up has also been increasing. The NBS continuity clinics (NBSCCs) have continuously been creating strategies to improve long-term patient health outcomes.
Objective:
This paper aimed to describe the establishment of a community-based networking system of satellite clinics.
Methodology:
A document review of resources including powerpoint presentations, a local ordinance, Newborn Screening Reference Center database of statistics of the NBSCCs from 2015 to 2021 and a Department of Health - Center for Health Development memorandum was done.
Results:
NBS satellite clinics were developed as a strategy for improving the tracking and long-term follow-up of patients confirmed for one of the conditions in the NBS panel. Satellite clinics offering long-term follow-up services were set up in hospitals strategically located in the provinces of the Western Visayas, especially in areas with a high number of patients. Capacity building activities were initiated among the established NBS satellite clinic core teams which were composed of doctors, nurses, and/or midwives. A total of 15 satellite clinics spread out across the six provinces of Western Visayas were established in 2017. By the end of 2020, the Western Visayas region had a total of 528 confirmed patients endorsed by the Newborn Screening Center Visayas (NSC V) and the recall rate increased from 62.77 % in 2015 to 87.79 % in 2020.
Conclusion
The establishment of satellite clinics provided a region-wide accessibility and availability of longterm follow-up services to the patients as seen by the increase in the patient recall rate. The benefits were seen especially during the implementation of strict border controls due to the pandemic which ensured the continuity of care of the patients in the region. This concept can serve as a model for other NBSCCs in the archipelago and for other regions across the Philippines.
Neonatal Screening


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