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result(s) for
"Segbefia, Catherine"
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Short-term chemotherapy-related complications and undernutrition in children diagnosed with cancer at Korle Bu Teaching Hospital, Accra, Ghana: A prospective cohort study
by
Alhassan, Yakubu
,
Segbefia, Catherine I.
,
Renner, Lorna A.
in
Anemia
,
Biology and Life Sciences
,
Cancer
2024
Undernutrition in children with cancer is associated with complications during cancer therapy. The study objective was to determine the association between specific anthropometric parameters and short-term chemotherapy-related complications and mortality. This was a hospital-based, prospective cohort study of children, age ≤12 years, with a new cancer diagnosis at the Paediatric Oncology Unit, Korle Bu Teaching Hospital, Ghana. Socio-demographic information, cancer characteristics and anthropometric measurements were obtained at enrolment. Participants were followed up for twelve weeks from commencement of chemotherapy and selected treatment-related complications such as anaemia and thrombocytopenia requiring transfusions, prolonged neutropenia resulting in treatment delays, febrile neutropenia, mucositis and death were recorded. A total of 133 participants were recruited with a median age of 4.5 years. Eighty-one (60.9%) were diagnosed with solid tumours, 31 (23.3%) had leukaemias and 21 (15.8%) had lymphomas. Of the anthropometric parameters assessed, only arm anthropometry using upper arm muscle area (UAMA) and mid-upper arm circumference (MUAC) were associated with complications. Participants with wasting were more likely to develop anaemia and mucositis. However, the incidence of prolonged neutropenia was significantly higher among participants with average UAMA (p = 0.043) and low average UAMA (p = 0.049) compared to those with low UAMA. Risk of neutropenia was also significantly less among those with wasting by MUAC compared to those well-nourished (p = 0.045). Twenty-three participants (17.3%) died with a greater proportion (11/44; 25%) occurring in those who were wasted using MUAC. These findings underscore the need for nutritional surveillance at diagnosis and during chemotherapy, particularly where co-morbid disease is prevalent.
Journal Article
Outcomes of haemoglobin Bart’s hydrops fetalis following intrauterine transfusion in Ontario, Canada
by
Merelles-Pulcini, Manuela
,
Kirby-Allen, Melanie
,
Chen, Shiyi
in
Abortion, Induced - statistics & numerical data
,
Abortion, Spontaneous - epidemiology
,
Blood diseases
2021
ObjectivesWith improved access to intrauterine transfusion (IUT), more fetuses with haemoglobin Bart’s hydrops fetalis (HBHF; homozygous α0-thalassaemia) will survive.DesignTo evaluate the long-term outcome of affected fetuses with and without IUT in Ontario, Canada, we retrospectively collected data on IUTs and pregnancy outcomes in all cases of HBHF, from 1989 to 2014. Clinical outcome and neurocognitive profiles of long-term survivors were also collected and compared with data from 24 patients with transfusion-dependent β-thalassaemia (TDT-β).ResultsOf the 99 affected pregnancies (93 prenatally diagnosed), 68 resulted in miscarriage or elective termination of pregnancy. Twelve mothers (12%) continued their pregnancies without IUT, and none of those newborns survived the first week of life. All 13 fetuses that received IUT(s) were live-born, but 3 died due to severe hydrops at birth and 1 died due to infection. The remaining nine survivors, in comparison with TDT-β patients, had earlier iron overload requiring iron chelation therapy. Endocrinopathies and short stature were more frequent in these patients. Neurocognitive outcome was not significantly affected in five patients who were assessed, and none were diagnosed with intellectual impairment. In three patients, MRI studies demonstrated brain white matter changes in keeping with ‘silent’ ischaemic infarcts.ConclusionsIn patients with HBHF, IUT is associated with improved survival. While acceptable neurocognitive outcome can be expected, these patients have more clinical complications compared with their TDT-β counterparts. The clinical and neurocognitive outcomes of HBHF should be discussed in detail when counselling and offering IUT for patients.
Journal Article
A Multinational Trial of Prasugrel for Sickle Cell Vaso-Occlusive Events
by
Heath, Lori E
,
Robitaille, Nancy
,
Nduba, Videlis N
in
Acute Chest Syndrome - etiology
,
Acute Chest Syndrome - prevention & control
,
Administration, Oral
2016
In an effort to reduce the rate of sickle cell crises and acute chest syndrome, a trial compared prasugrel with placebo in patients 2 through 17 years of age who had sickle cell anemia. Prasugrel did not have a significant effect on the rate of vaso-occlusive crises.
Sickle cell anemia, which is estimated to affect 100 million persons worldwide, is an inherited blood disorder characterized by hemolytic anemia and recurrent vaso-occlusive crises that are associated with hospitalizations, impaired quality of life, and early death.
1
–
3
The pathophysiological mechanism of vaso-occlusion in sickle cell anemia is complex. The polymerization of sickle hemoglobin initiates a cascade of thrombotic and inflammatory insults that result in progressive vascular damage and ischemic end-organ injury.
4
Hydroxyurea is partially effective in reducing the frequency of acute vaso-occlusive events, but it has not been shown to prevent organ damage.
5
There is an unmet need for . . .
Journal Article
Prospective identification of variables as outcomes for treatment (PIVOT): study protocol for a randomised, placebo-controlled trial of hydroxyurea for Ghanaian children and adults with haemoglobin SC disease
by
Smart, Luke R.
,
Segbefia, Catherine I.
,
Stuber, Susan E.
in
Adults
,
Biomedicine
,
Blood transfusions
2023
Background
Haemoglobin SC (HbSC) is a common form of sickle cell disease (SCD), especially among individuals of West African ancestry. Persons with HbSC disease suffer from the same clinical complications and reduced quality of life that affect those with sickle cell anaemia (HbSS/Sβ
0
). Retrospective anecdotal data suggest short-term safety and benefits of hydroxyurea for treating HbSC, yet rigorous prospective data are lacking regarding optimal dosing, clinical and laboratory effects, long-term safety and benefits, and appropriate endpoints to monitor. Prospective Investigation of Variables as Outcomes for Treatment (PIVOT) was designed with three aims: (1) to measure the toxicities of hydroxyurea treatment on laboratory parameters, (2) to assess the effects of hydroxyurea treatment on sickle-related clinical and laboratory parameters, and (3) to identify study endpoints suitable for a future definitive phase III trial of hydroxyurea treatment of HbSC disease.
Methods
PIVOT is a randomised, placebo-controlled, double blind clinical trial of hydroxyurea. Approximately 120 children and 120 adults ages 5–50 years with HbSC disease will be enrolled, screened for 2 months, and then randomised 1:1 to once-daily oral hydroxyurea or placebo. Study treatment will be prescribed initially at 20 ± 5 mg/kg/day with an opportunity to escalate the dose twice over the first 6 months. After 12 months of blinded study treatment, all participants will be offered open-label hydroxyurea for up to 4 years. Safety outcomes include treatment-related cytopenias, whole blood viscosity, and adverse events. Efficacy outcomes include a variety of laboratory and clinical parameters over the first 12 months of randomised treatment, including changes in haemoglobin and fetal haemoglobin, intracranial arterial velocities measured by transcranial Doppler ultrasound, cerebral oxygenation using near infrared spectrometry, spleen volume and kidney size by ultrasound, proteinuria, and retinal imaging. Exploratory outcomes include functional erythrocyte analyses with ektacytometry for red blood cell deformability and point-of-sickling, patient-reported outcomes using the PROMIS questionnaire, and 6-min walk test.
Discussion
For children and adults with HbSC disease, PIVOT will determine the safety of hydroxyurea and identify measurable changes in laboratory and clinical parameters, suitable for future prospective testing in a definitive multi-centre phase III clinical trial.
Trial registration
PACTR, PACTR202108893981080. Registered 24 August 2021,
https://pactr.samrc.ac.za
Journal Article
Evaluation of treatment patterns, healthcare resource utilization and cost of illness for sickle cell disease in Ghana: a private medical insurance claims database study
by
Subramanyam, Kumaresan
,
Marfo, Kwaku
,
Dei-Adomakoh, Yvonne
in
Analysis
,
Anemia
,
Antiparasitic agents
2023
Background
Sickle cell disease (SCD) is a major public health concern in sub-Saharan Africa, accounting for nearly 75% of the global disease burden. The current analysis evaluated patient characteristics, treatment patterns, healthcare resource utilization (HCRU) and associated costs in patients with SCD based on a Private Medical Insurance Database in Ghana.
Methods
This retrospective longitudinal cohort study was conducted using an e-claims database from Ghana (01 January 2015 to 31 March 2021). Patients were stratified by age (0 month to < 2 years, ≥ 2 years to ˂6 years, ≥ 6 years to < 12 years, ≥ 12 years to < 16 years; ≥16 years), vaso-occlusive crisis (VOC) (< 1, ≥ 1 to < 3, and ≥ 3 per year), and continuous enrolment. Study outcomes related to patient characteristics, comorbidities, treatment pattern, HCRU were evaluated for pre- and post-index period (index period was between July 2015 to March 2020). Descriptive analysis was used to analyse different study variables.
Results
The study included 2,863 patients (mean age: 20.1 years; Min age: 0; Max age: 83; females 56.1%). Overall, 52.2% (
n
= 1,495) of SCD patients were ≥ 16 years and 17.0% (
n
= 486) were in the ≥ 2 to ˂6-years age group. The majority of patients aged ≥ 16 years (62.5%) in the database did not have reported VOC episodes, 35.9% of patients had 1 to 3 VOCs per year and 1.5% had ≥ 3 VOCs per year during the follow-up period. Consultation-based prevalence of SCD was 0.5% [95% confidence interval (CI): 0-1.3%] − 1.4% [CI: 0.6-2.2%]. Malaria, upper respiratory tract infection (URTI) and sepsis were the common complications of SCD. Analgesics were the most frequently prescribed medications followed by anti-infectives, hematinics, and antimalarials. Hydroxyurea, a routine standard of care for SCD was under-utilized. SCD patients had median cost incurred for consultation/hospital services of $11.3 (Interquartile range [IQR] $6.2 - $27.2). For patients with VOC, maximum median cost was incurred for medications ($10.9 [IQR $5.0-$32.6]). Overall median healthcare cost was highest for individuals with ≥ 3 VOCs per year during the follow-up period ($166.8 [IQR $70.3-$223.5]).
Conclusion
In this retrospective private insurance claims database analysis, SCD imposes a significant healthcare burden, especially in patients with VOC. There is a need for reimbursed treatment options that could reduce the long-term burden associated with SCD and VOC.
Journal Article
Elevated serum heme oxygenase‐1 in pediatric sickle cell disease: Insights from the SickleGenAfrica Network
2025
Sickle cell disease (SCD) is characterized by chronic hemolysis, resulting in the release of extracellular heme, which contributes to oxidative stress and inflammation. Heme oxygenase‐1 (HO‐1), an inducible enzyme that degrades heme into cytoprotective by‐products, plays a critical role in mitigating heme‐induced toxicity. This study analyzed serum HO‐1 levels in 2309 individuals with SCD (53% female; median age: 12 years) from the SickleGenAfrica cohort, comprising 57% hemoglobin SS disease (Hb SS), 30% hemoglobin SC disease (Hb SC), 3.1% Hb sickle beta plus thalassemia (Sβ+ thalassemia), and 9.9% Hb S‐hereditary persistence of fetal hemoglobin (Hb S‐HPFH). Median HO‐1 levels were threefold higher in children under 16 years (69.8 ng/mL; interquartile range [IQR]: 29.8–137.6) compared to adults (23.1 ng/mL; IQR: 7.8–62.4; P < 0.001), with peak levels observed in the 6–10‐year age group. Across all subgroups, including sex, genotype, and hydroxyurea use, children consistently exhibited higher HO‐1 levels than adults, with Hb SS patients showing the highest levels. Haptoglobin and hemopexin, key scavengers of hemoglobin and heme, respectively, were depleted in all patients, particularly in children. Overall, HO‐1 levels in SCD patients were markedly elevated compared to healthy populations. These findings highlight the pronounced elevation of HO‐1 in pediatric SCD patients, suggesting its potential protective role against heme‐induced toxicity, especially during childhood.
Journal Article
Diagnosis patterns of sickle cell disease in Ghana: a secondary analysis
by
Issaka, Rachel
,
Novarra, Austin
,
Bonsu, Kwaku Osei
in
Adolescent
,
Adults
,
Anemia, Sickle Cell - diagnosis
2021
Background
Despite having the highest prevalence of sickle cell disease (SCD) in the world, no country in Sub-Saharan Africa has a universal screening program for the disease. We sought to capture the diagnosis patterns of SCD (age at SCD diagnosis, method of SCD diagnosis, and age of first pain crisis) in Accra, Ghana.
Methods
We administered an in-person, voluntary survey to parents of offspring with SCD between 2009 and 2013 in Accra as a part of a larger study and conducted a secondary data analysis to determine diagnosis patterns. This was conducted at a single site: a large academic medical center in the region. Univariate analyses were performed on diagnosis patterns; bivariate analyses were conducted to determine whether patterns differed by participant’s age (children: those < 18 years old whose parents completed a survey about them, compared to adults: those > = 18 years old whose parents completed a survey about them), or their disease severity based on SCD genotype. Pearson’s chi-squared were calculated.
Results
Data was collected on 354 unique participants from parents. Few were diagnosed via SCD testing in the newborn period. Only 44% were diagnosed with SCD by age four; 46% had experienced a pain crisis by the same age. Most (66%) were diagnosed during pain crisis, either in acute (49%) or primary care (17%) settings. Children were diagnosed with SCD at an earlier age (74% by four years old); among the adults, parents reflected that 30% were diagnosed by four years old (
p
< 0.001). Half with severe forms of SCD were diagnosed by age four, compared to 31% with mild forms of the disease (
p
= 0.009).
Conclusions
The lack of a robust newborn screening program for SCD in Accra, Ghana, leaves children at risk for disease complications and death. People in our sample were diagnosed with SCD in the acute care setting, and in their toddler or school-age years or thereafter, meaning they are likely being excluded from important preventive care. Understanding current SCD diagnosis patterns in the region can inform efforts to improve the timeliness of SCD diagnosis, and improve the mortality and morbidity caused by the disease in this high prevalence population.
Journal Article
Deferrals for Low Haemoglobin and Anaemia Among First‐Time Prospective Blood Donors in Southern Ghana: Results From the BLOODSAFE Ghana—Iron and Nutritional Counselling Strategy Pilot (BLIS) Study
by
Adu-Afarwuah, Seth
,
Reilly, Cavan
,
Acquah, Michael Ebo
in
Anemia
,
Blood & organ donations
,
Consent
2025
In Ghana, prevalence of anaemia is higher than the worldwide average and contributes to deferral of blood donors. A cross‐sectional study was carried out as part of a pilot study aimed at improving haemoglobin levels and promoting repeat donations to retain donors who were deferred due to low haemoglobin. The copper sulphate test was used to determine low haemoglobin and anaemia assessed by the World Health Organization (WHO) gender‐specific criteria. Over sixteen months, 1213 donors were eligible, of which 826 (68%) were male and 78 (6.4%) were deferred for low haemoglobin. Among these 78 deferrals, 71 (91%) were female, 77 (99%) were first‐time donors and 77 (99%) were voluntary nonremunerated blood donors (VNRBDs). A total of 337 donors consented to provide a blood specimen out of which 325 donors met eligibility criteria and had complete FBC results. Of those, 189 ( N = 39 males; N = 150 females), or 58%, were classified as anaemic. Model‐based estimates which correct for selection bias in the enrolment process found that 61.6% of female donors (95% credible interval: [53.4%, 70.8%]) and 19.7% of male donors (95% credible interval: [11.5%, 33.8%]) were anaemic by WHO criteria. Among the 252 consenting donors with completed blood specimen analyses and haemoglobin levels meeting the threshold for blood donation, 118 (47%) were classified as anaemic according to WHO criteria. Population‐level estimates of anaemia using WHO criteria suggest anaemia is highly prevalent and the results generally matched donor deferral using the copper sulphate test among women blood donors. Trial Registration: ClinicalTrials.gov identifier: NCT04949165
Journal Article
Unusual Metastatic Patterns of Wilms Tumor: A Case Series
2024
Wilms tumor (WT) is the most common renal malignancy of childhood. The common metastatic sites are the lungs, liver, and lymph nodes, with brain and bone metastases occurring rarely. Metastatic disease can be present at initial diagnosis or may occur with relapse or disease progression. The majority of relapses in WT occur within the first two years post-treatment. Late relapses are rare. This article describes four cases of WT, each demonstrating an unusual site or timing of metastases. Case 1 presented primarily with jaw metastases, Case 2 presented with bone (vertebrae) and spinal metastases manifesting as paraplegia, at relapse one year after completion of treatment, Case 3 presented with isolated liver metastases four years after treatment completion, and Case 4 presented with brain metastases after six weeks of treatment abandonment. This case series demonstrates the varied pattern of metastases of WT and highlights the need for a high index of suspicion for WT among patients who present with unusual sites of tumor or for metastasis in those who present with neurologic symptoms during or after treatment.
Journal Article
Clinical and laboratory characteristics of children with sickle cell disease on hydroxyurea treated with artemether-lumefantrine for acute uncomplicated malaria
by
Afrane, Adwoa K. A.
,
Amponsah, Seth Kwabena
,
Brew, Yvonne
in
Anemia
,
Antiparasitic agents
,
artemether-lumefantrine
2023
Limited information exists on any interactions between hydroxyurea (HU) and antimalarials in sickle cell disease (SCD). We evaluated changes in clinical and laboratory parameters among children with SCD on HU therapy treated with artemether-lumefantrine (AL) for acute uncomplicated malaria (UM).
A prospective, non-randomized, pilot study of 127 children with SCD (23, UM; 104, steady state) were recruited from three hospitals in Accra. UM participants were treated with standard doses of AL and followed up, on days 1, 2, 3, 7, 14, and 28. Venous blood was collected at baseline and follow-up days in participants with UM for determination of malaria parasitaemia, full blood count, reticulocytes, and clinical chemistry. Further,
identification of rapid diagnostic test (RDT) positive samples was done using nested polymerase chain reaction (PCR).
Among SCD participants with UM, admission temperature, neutrophils, alanine-aminotransferase, gamma-glutamyl-transferase, and haemoglobin significantly differed between HU recipients (HU+) and steady state, while white blood cell, neutrophils, reticulocytes, bilirubin, urea, and temperature differed significantly between non-HU recipients (no-HU), and steady state. Mean parasitaemia (HU+, 2930.3 vs. no-HU, 1,060,
= 0.74) and adverse events (HU+, 13.9% vs. no-HU, 14.3%), were comparable (
= 0.94). Day 28 reticulocyte count was higher in the HU+ (0.24) (0.17 to 0.37) vs. no-HU, [0.15 (0.09 to 0.27),
= 0.022]. Significant differences in lymphocyte [HU+ 2.74 95% CI (-5.38 to 58.57) vs. no-HU -0.34 (-3.19 to 4.44),
= 0.024]; bilirubin [HU+, -4.44 (-16.36 to 20.74) vs. no-HU -18.37 (-108.79 to -7.16)]; and alanine aminotransferase, [HU+, -4.00 (-48.55 to 6.00) vs. no-HU, 7.00 (-22.00 to 22.00)] were observed during follow up.
Parasite clearance and adverse event occurrence were comparable between SCD children treated with AL irrespective of HU status. However, distinct patterns of changes in laboratory indices suggest the need for larger, more focused studies.
Journal Article