1.Constitutional Chromosome 21 Abnormality in B-ALL with iAMP21 in a Patient Developing Treatment-Related Myelodysplastic Syndrome
Inhwa KIM ; Su Hyun YOON ; Sunghan KANG ; Kyung-Nam KOH ; Mi Young KIM ; Young-Uk CHO ; Sang-Hyun HWANG ; Seongsoo JANG ; Eul-Ju SEO ; Beom Hee LEE ; Sunghee MIN ; Hyunwoo BAE ; Ho Joon IM ; Hyery KIM
Clinical Pediatric Hematology-Oncology 2025;32(1):23-28
The initial molecular cytogenetic characteristics of blasts plays a significant role in determining the treatment course of B-cell acute lymphoblastic leukemia (B-ALL).B-ALL with intrachromosomal amplification of chromosome 21 (iAMP21) has been well known to have unfavorable prognosis. Also, there are previously recognized germline mutations that increase the risk of ALL, such as trisomy 21, Down syndrome. This case report is about a 16-year-old girl who presented with lymphadenitis, purpura, and fever followed by initial lab of elevated white blood cell with blasts.She had some notable facial features, but no typical Down syndrome related one.Bone marrow biopsy and fluorescence in situ hybridization finalized the diagnosis as B-ALL with iAMP21, high-risk group. The minimal residual disease-negative complete remission was achieved after the induction chemotherapy with Korean multicenter high-risk protocol. However, abnormal karyotype was sustained in bone marrow. Microarrays with her buccal swab raised the possibility that the abnormal karyotype was not from the leukemic blasts but rather from the germline. Although she underwent scheduled chemotherapy uneventfully as slow early responder type, thrombocytopenia and abnormal karyotype persisted, leading to the diagnosis of acute myeloid leukemia. Additional chemotherapy and peripheral blood stem cell transplantation was performed which resulted in engraftment. This case highlights the discovery of a constitutional genetic aberration, which played like a silent yet critical background factor for B-ALL with iAMP21. As the number of reported cases are limited, the role of germline chromosome 21 mutation as the indicator for prognosis of B-ALL should be studied further.
2.Bridging the Gap in Epilepsy Care for Refugees in Nakivale Settlement, Uganda
Hyunwoo BAE ; Hyunsuk LIM ; Ariane Dora NITEKA ; Yun-Jeong LEE ; Soonhak KWON
Annals of Child Neurology 2025;33(2):56-65
Purpose:
The global increase in forcibly displaced people, combined with insufficient aid, leaves many—in particular, people with epilepsy—in a dire medical state. Our study aimed to understand the demographics and clinical features of epilepsy in the Nakivale refugee settlement and to highlight our intervention through the ‘CARE FOR ALL’ project, which will run for 5 years.
Methods:
Between August 2022 and May 2023, we conducted four outreach visits across three locations in Uganda, consulting 161 patients. After excluding incomplete data, we analyzed the medical records of 81 epilepsy cases.
Results:
Of the 81 patients, most were male (65.4%), under 18 years old (77.8%), had low education levels (93.8%), and were predominantly Congolese (58.0%). The majority experienced focal onset seizures (51.8%), and epilepsy began before the age of one in 28.4% of patients. All patients had comorbidities, with intellectual impairment (70.4%) and cerebral palsy (27.2%) being the most common. Identified risk factors included antenatal complications, central nervous system infections, and war-related injuries. Before our intervention, the treatment gap was 76.5%; this was reduced to 0% after the project, which also significantly decreased seizure frequency (seizure freedom 30.9%, P<0.05). Carbamazepine was the most common antiseizure medication used (59.2%).
Conclusion
Refugees with epilepsy face major barriers to care that negatively impact their quality of life. A coordinated effort by governments and health agencies is crucial to overcome these challenges and improve outcomes for displaced individuals with epilepsy.
3.Impact of Nusinersen on the Health-Related Quality of Life and Caregiver Burden in Patients with Spinal Muscular Atrophy with Symptom Onset before the Age of 6 Months
Yun Jeong LEE ; Hyunwoo BAE ; Young Kyu SHIM ; Jae So CHO ; Jong Hee CHAE ; Soonhak KWON
Annals of Child Neurology 2025;33(2):39-47
Purpose:
This study investigated the impact of nusinersen on health-related quality of life (HRQoL), functional performance, and caregiver burden in patients with infantile-onset spinal muscular atrophy (SMA), addressing a growing interest in disease-modifying treatments.
Methods:
A 14-month observational study was conducted to evaluate changes in HRQoL and functional performance using the Pediatric Quality of Life Inventory (PedsQL) Infant Scales and the Pediatric Evaluation of Disability Inventory Computer Adaptive Test (PEDI-CAT). Caregiver burden was assessed through the Assessment of Caregiver Experience with Neuromuscular Disease (ACEND). Motor function was evaluated using the Children’s Hospital of Philadelphia Infant Test of Neuromuscular Disorders (CHOP INTEND). Correlations between CHOP INTEND scores, functional performance, and caregiver burden were analyzed.
Results:
Eight patients with infantile-onset SMA and their caregivers participated, with a median treatment initiation age of 4.6 months (range, 1.1 to 15.1). CHOP INTEND scores showed significant improvement (P<0.001), whereas all PedsQL Infant Scale scores declined. Conversely, the PEDI-CAT revealed significant enhancements in daily activities, mobility, and social-cognitive domains (all P<0.001). Caregiver burden lessened across most dimensions (P<0.001), with the exception of the time-related burden (P=0.731). Higher CHOP INTEND scores correlated with improvements in PEDI-CAT domains and a reduction in caregiver burden related to sitting/play and transfer activities.
Conclusion
The study demonstrates the positive effects of nusinersen on functional performance and caregiver burden in patients with infantile-onset SMA. However, discrepancies were observed in HRQoL outcomes, suggesting a need for further research that includes SMA-specific outcome measures to comprehensively assess the treatment's impact on patients' lives.
4.Constitutional Chromosome 21 Abnormality in B-ALL with iAMP21 in a Patient Developing Treatment-Related Myelodysplastic Syndrome
Inhwa KIM ; Su Hyun YOON ; Sunghan KANG ; Kyung-Nam KOH ; Mi Young KIM ; Young-Uk CHO ; Sang-Hyun HWANG ; Seongsoo JANG ; Eul-Ju SEO ; Beom Hee LEE ; Sunghee MIN ; Hyunwoo BAE ; Ho Joon IM ; Hyery KIM
Clinical Pediatric Hematology-Oncology 2025;32(1):23-28
The initial molecular cytogenetic characteristics of blasts plays a significant role in determining the treatment course of B-cell acute lymphoblastic leukemia (B-ALL).B-ALL with intrachromosomal amplification of chromosome 21 (iAMP21) has been well known to have unfavorable prognosis. Also, there are previously recognized germline mutations that increase the risk of ALL, such as trisomy 21, Down syndrome. This case report is about a 16-year-old girl who presented with lymphadenitis, purpura, and fever followed by initial lab of elevated white blood cell with blasts.She had some notable facial features, but no typical Down syndrome related one.Bone marrow biopsy and fluorescence in situ hybridization finalized the diagnosis as B-ALL with iAMP21, high-risk group. The minimal residual disease-negative complete remission was achieved after the induction chemotherapy with Korean multicenter high-risk protocol. However, abnormal karyotype was sustained in bone marrow. Microarrays with her buccal swab raised the possibility that the abnormal karyotype was not from the leukemic blasts but rather from the germline. Although she underwent scheduled chemotherapy uneventfully as slow early responder type, thrombocytopenia and abnormal karyotype persisted, leading to the diagnosis of acute myeloid leukemia. Additional chemotherapy and peripheral blood stem cell transplantation was performed which resulted in engraftment. This case highlights the discovery of a constitutional genetic aberration, which played like a silent yet critical background factor for B-ALL with iAMP21. As the number of reported cases are limited, the role of germline chromosome 21 mutation as the indicator for prognosis of B-ALL should be studied further.
5.Bridging the Gap in Epilepsy Care for Refugees in Nakivale Settlement, Uganda
Hyunwoo BAE ; Hyunsuk LIM ; Ariane Dora NITEKA ; Yun-Jeong LEE ; Soonhak KWON
Annals of Child Neurology 2025;33(2):56-65
Purpose:
The global increase in forcibly displaced people, combined with insufficient aid, leaves many—in particular, people with epilepsy—in a dire medical state. Our study aimed to understand the demographics and clinical features of epilepsy in the Nakivale refugee settlement and to highlight our intervention through the ‘CARE FOR ALL’ project, which will run for 5 years.
Methods:
Between August 2022 and May 2023, we conducted four outreach visits across three locations in Uganda, consulting 161 patients. After excluding incomplete data, we analyzed the medical records of 81 epilepsy cases.
Results:
Of the 81 patients, most were male (65.4%), under 18 years old (77.8%), had low education levels (93.8%), and were predominantly Congolese (58.0%). The majority experienced focal onset seizures (51.8%), and epilepsy began before the age of one in 28.4% of patients. All patients had comorbidities, with intellectual impairment (70.4%) and cerebral palsy (27.2%) being the most common. Identified risk factors included antenatal complications, central nervous system infections, and war-related injuries. Before our intervention, the treatment gap was 76.5%; this was reduced to 0% after the project, which also significantly decreased seizure frequency (seizure freedom 30.9%, P<0.05). Carbamazepine was the most common antiseizure medication used (59.2%).
Conclusion
Refugees with epilepsy face major barriers to care that negatively impact their quality of life. A coordinated effort by governments and health agencies is crucial to overcome these challenges and improve outcomes for displaced individuals with epilepsy.
6.Impact of Nusinersen on the Health-Related Quality of Life and Caregiver Burden in Patients with Spinal Muscular Atrophy with Symptom Onset before the Age of 6 Months
Yun Jeong LEE ; Hyunwoo BAE ; Young Kyu SHIM ; Jae So CHO ; Jong Hee CHAE ; Soonhak KWON
Annals of Child Neurology 2025;33(2):39-47
Purpose:
This study investigated the impact of nusinersen on health-related quality of life (HRQoL), functional performance, and caregiver burden in patients with infantile-onset spinal muscular atrophy (SMA), addressing a growing interest in disease-modifying treatments.
Methods:
A 14-month observational study was conducted to evaluate changes in HRQoL and functional performance using the Pediatric Quality of Life Inventory (PedsQL) Infant Scales and the Pediatric Evaluation of Disability Inventory Computer Adaptive Test (PEDI-CAT). Caregiver burden was assessed through the Assessment of Caregiver Experience with Neuromuscular Disease (ACEND). Motor function was evaluated using the Children’s Hospital of Philadelphia Infant Test of Neuromuscular Disorders (CHOP INTEND). Correlations between CHOP INTEND scores, functional performance, and caregiver burden were analyzed.
Results:
Eight patients with infantile-onset SMA and their caregivers participated, with a median treatment initiation age of 4.6 months (range, 1.1 to 15.1). CHOP INTEND scores showed significant improvement (P<0.001), whereas all PedsQL Infant Scale scores declined. Conversely, the PEDI-CAT revealed significant enhancements in daily activities, mobility, and social-cognitive domains (all P<0.001). Caregiver burden lessened across most dimensions (P<0.001), with the exception of the time-related burden (P=0.731). Higher CHOP INTEND scores correlated with improvements in PEDI-CAT domains and a reduction in caregiver burden related to sitting/play and transfer activities.
Conclusion
The study demonstrates the positive effects of nusinersen on functional performance and caregiver burden in patients with infantile-onset SMA. However, discrepancies were observed in HRQoL outcomes, suggesting a need for further research that includes SMA-specific outcome measures to comprehensively assess the treatment's impact on patients' lives.
7.Bridging the Gap in Epilepsy Care for Refugees in Nakivale Settlement, Uganda
Hyunwoo BAE ; Hyunsuk LIM ; Ariane Dora NITEKA ; Yun-Jeong LEE ; Soonhak KWON
Annals of Child Neurology 2025;33(2):56-65
Purpose:
The global increase in forcibly displaced people, combined with insufficient aid, leaves many—in particular, people with epilepsy—in a dire medical state. Our study aimed to understand the demographics and clinical features of epilepsy in the Nakivale refugee settlement and to highlight our intervention through the ‘CARE FOR ALL’ project, which will run for 5 years.
Methods:
Between August 2022 and May 2023, we conducted four outreach visits across three locations in Uganda, consulting 161 patients. After excluding incomplete data, we analyzed the medical records of 81 epilepsy cases.
Results:
Of the 81 patients, most were male (65.4%), under 18 years old (77.8%), had low education levels (93.8%), and were predominantly Congolese (58.0%). The majority experienced focal onset seizures (51.8%), and epilepsy began before the age of one in 28.4% of patients. All patients had comorbidities, with intellectual impairment (70.4%) and cerebral palsy (27.2%) being the most common. Identified risk factors included antenatal complications, central nervous system infections, and war-related injuries. Before our intervention, the treatment gap was 76.5%; this was reduced to 0% after the project, which also significantly decreased seizure frequency (seizure freedom 30.9%, P<0.05). Carbamazepine was the most common antiseizure medication used (59.2%).
Conclusion
Refugees with epilepsy face major barriers to care that negatively impact their quality of life. A coordinated effort by governments and health agencies is crucial to overcome these challenges and improve outcomes for displaced individuals with epilepsy.
8.Impact of Nusinersen on the Health-Related Quality of Life and Caregiver Burden in Patients with Spinal Muscular Atrophy with Symptom Onset before the Age of 6 Months
Yun Jeong LEE ; Hyunwoo BAE ; Young Kyu SHIM ; Jae So CHO ; Jong Hee CHAE ; Soonhak KWON
Annals of Child Neurology 2025;33(2):39-47
Purpose:
This study investigated the impact of nusinersen on health-related quality of life (HRQoL), functional performance, and caregiver burden in patients with infantile-onset spinal muscular atrophy (SMA), addressing a growing interest in disease-modifying treatments.
Methods:
A 14-month observational study was conducted to evaluate changes in HRQoL and functional performance using the Pediatric Quality of Life Inventory (PedsQL) Infant Scales and the Pediatric Evaluation of Disability Inventory Computer Adaptive Test (PEDI-CAT). Caregiver burden was assessed through the Assessment of Caregiver Experience with Neuromuscular Disease (ACEND). Motor function was evaluated using the Children’s Hospital of Philadelphia Infant Test of Neuromuscular Disorders (CHOP INTEND). Correlations between CHOP INTEND scores, functional performance, and caregiver burden were analyzed.
Results:
Eight patients with infantile-onset SMA and their caregivers participated, with a median treatment initiation age of 4.6 months (range, 1.1 to 15.1). CHOP INTEND scores showed significant improvement (P<0.001), whereas all PedsQL Infant Scale scores declined. Conversely, the PEDI-CAT revealed significant enhancements in daily activities, mobility, and social-cognitive domains (all P<0.001). Caregiver burden lessened across most dimensions (P<0.001), with the exception of the time-related burden (P=0.731). Higher CHOP INTEND scores correlated with improvements in PEDI-CAT domains and a reduction in caregiver burden related to sitting/play and transfer activities.
Conclusion
The study demonstrates the positive effects of nusinersen on functional performance and caregiver burden in patients with infantile-onset SMA. However, discrepancies were observed in HRQoL outcomes, suggesting a need for further research that includes SMA-specific outcome measures to comprehensively assess the treatment's impact on patients' lives.
9.Constitutional Chromosome 21 Abnormality in B-ALL with iAMP21 in a Patient Developing Treatment-Related Myelodysplastic Syndrome
Inhwa KIM ; Su Hyun YOON ; Sunghan KANG ; Kyung-Nam KOH ; Mi Young KIM ; Young-Uk CHO ; Sang-Hyun HWANG ; Seongsoo JANG ; Eul-Ju SEO ; Beom Hee LEE ; Sunghee MIN ; Hyunwoo BAE ; Ho Joon IM ; Hyery KIM
Clinical Pediatric Hematology-Oncology 2025;32(1):23-28
The initial molecular cytogenetic characteristics of blasts plays a significant role in determining the treatment course of B-cell acute lymphoblastic leukemia (B-ALL).B-ALL with intrachromosomal amplification of chromosome 21 (iAMP21) has been well known to have unfavorable prognosis. Also, there are previously recognized germline mutations that increase the risk of ALL, such as trisomy 21, Down syndrome. This case report is about a 16-year-old girl who presented with lymphadenitis, purpura, and fever followed by initial lab of elevated white blood cell with blasts.She had some notable facial features, but no typical Down syndrome related one.Bone marrow biopsy and fluorescence in situ hybridization finalized the diagnosis as B-ALL with iAMP21, high-risk group. The minimal residual disease-negative complete remission was achieved after the induction chemotherapy with Korean multicenter high-risk protocol. However, abnormal karyotype was sustained in bone marrow. Microarrays with her buccal swab raised the possibility that the abnormal karyotype was not from the leukemic blasts but rather from the germline. Although she underwent scheduled chemotherapy uneventfully as slow early responder type, thrombocytopenia and abnormal karyotype persisted, leading to the diagnosis of acute myeloid leukemia. Additional chemotherapy and peripheral blood stem cell transplantation was performed which resulted in engraftment. This case highlights the discovery of a constitutional genetic aberration, which played like a silent yet critical background factor for B-ALL with iAMP21. As the number of reported cases are limited, the role of germline chromosome 21 mutation as the indicator for prognosis of B-ALL should be studied further.
10.Bridging the Gap in Epilepsy Care for Refugees in Nakivale Settlement, Uganda
Hyunwoo BAE ; Hyunsuk LIM ; Ariane Dora NITEKA ; Yun-Jeong LEE ; Soonhak KWON
Annals of Child Neurology 2025;33(2):56-65
Purpose:
The global increase in forcibly displaced people, combined with insufficient aid, leaves many—in particular, people with epilepsy—in a dire medical state. Our study aimed to understand the demographics and clinical features of epilepsy in the Nakivale refugee settlement and to highlight our intervention through the ‘CARE FOR ALL’ project, which will run for 5 years.
Methods:
Between August 2022 and May 2023, we conducted four outreach visits across three locations in Uganda, consulting 161 patients. After excluding incomplete data, we analyzed the medical records of 81 epilepsy cases.
Results:
Of the 81 patients, most were male (65.4%), under 18 years old (77.8%), had low education levels (93.8%), and were predominantly Congolese (58.0%). The majority experienced focal onset seizures (51.8%), and epilepsy began before the age of one in 28.4% of patients. All patients had comorbidities, with intellectual impairment (70.4%) and cerebral palsy (27.2%) being the most common. Identified risk factors included antenatal complications, central nervous system infections, and war-related injuries. Before our intervention, the treatment gap was 76.5%; this was reduced to 0% after the project, which also significantly decreased seizure frequency (seizure freedom 30.9%, P<0.05). Carbamazepine was the most common antiseizure medication used (59.2%).
Conclusion
Refugees with epilepsy face major barriers to care that negatively impact their quality of life. A coordinated effort by governments and health agencies is crucial to overcome these challenges and improve outcomes for displaced individuals with epilepsy.

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