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Köse E, Kasapkara ÇS, İnci A, Yıldız Y, Sürücü Kara İ, Kahraman AB, Tümer L, Dursun A, Eminoğlu FT. Long-term clinical evaluation of patients with alpha-mannosidosis - A multicenter study. Eur J Med Genet 2024; 68:104927. [PMID: 38382588 DOI: 10.1016/j.ejmg.2024.104927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 02/08/2024] [Accepted: 02/18/2024] [Indexed: 02/23/2024]
Abstract
BACKGROUND Alpha mannosidosis is an autosomal recessive lysosomal storage disorder caused by biallelic pathogenic variants in the MAN2B1 gene. It manifests with clinical features, including intellectual disability, hearing impairment, coarse facial appearance, skeletal anomalies, immunodeficiency, central nervous system involvement, psychiatric comorbidities, corneal opacity, and hepatosplenomegaly. This multicenter study assesses the long-term outcomes of individuals diagnosed with alpha-mannosidosis, examining demographic, clinical, laboratory, and molecular characteristics. METHOD Sixteen patients diagnosed with alpha-mannosidosis who presented to four pediatric metabolic units were included in the study. The patients' medical records were analyzed and data on demographics, clinical presentation and laboratory findings were recorded. RESULTS Of the 16 patients (6 females, 10 males) with alpha mannosidosis included in the study, the mean age at the time of diagnosis was 79.4 ± 56.1 (16-208) months, and the mean diagnosis delay time was 57.9 ± 51.9 (4-181) months. Hearing loss was the primary manifestation found in seven out of 16 patients (43.8%), followed by speech delay in 37.8%. On clinical follow-up, 87.5% of patients experienced recurrent infections, mainly in the upper respiratory tract, with 12 requiring the use of a hearing aid. Hepatomegaly was found in six out of 13 patients who received abdominal ultrasonography; two out of 12 patients who underwent echocardiography were found to have mitral valve prolapse (16.6%). Upon neurological evaluation, five patients displayed no neurological manifestation. Delayed language development was observed in nine (56.3%) patients, intellectual disability in eight (50%) patients, and hypertonicity was identified in one (6.3%) patient with the severe form of the disease. Homozygous c.2477C>A (p.Ser826Ter) and homozygous c.967G>A (p.Glu323Lys) novel variants were detected in four patients and one patient, respectively. The most common variant observed in the study was c.2477C>A (p.Ser826Ter). CONCLUSION The present study identified two novel MAN2B1 variants. An evaluation of the long-term outcome of alpha-mannosidosis, in which the early initiation of enzyme replacement therapy (ERT) may lead to a better clinical outcome, can permit a better analysis of the effect of ERT on the natural progression of the disease.
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Affiliation(s)
- Engin Köse
- Ankara University, Faculty of Medicine, Pediatric Metabolism, Ankara, Turkey; Ankara University Rare Diseases Application and Research Center, Ankara, Turkey.
| | - Çiğdem Seher Kasapkara
- Ankara Yıldırım Beyazıt University, Faculty of Medicine, Department of Pediatric Metabolism, Ankara Bilkent City Hospital, Ankara, Turkey
| | - Aslı İnci
- Gazi University, Faculty of Medicine, Department of Pediatric Metabolism, Ankara, Turkey
| | - Yılmaz Yıldız
- Hacettepe University, Faculty of Medicine, Department of Pediatric Metabolism, Ankara, Turkey
| | - İlknur Sürücü Kara
- Ankara University, Faculty of Medicine, Pediatric Metabolism, Ankara, Turkey
| | - Ayça Burcu Kahraman
- Hacettepe University, Faculty of Medicine, Department of Pediatric Metabolism, Ankara, Turkey
| | - Leyla Tümer
- Gazi University, Faculty of Medicine, Department of Pediatric Metabolism, Ankara, Turkey
| | - Ali Dursun
- Hacettepe University, Faculty of Medicine, Department of Pediatric Metabolism, Ankara, Turkey
| | - Fatma Tuba Eminoğlu
- Ankara University, Faculty of Medicine, Pediatric Metabolism, Ankara, Turkey; Ankara University Rare Diseases Application and Research Center, Ankara, Turkey
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Sürücü Kara İ, Köse E, Çavdarlı B, Eminoğlu FT. Neuronal ceroid lipofuscinosis type 11 diagnosed patient with bi-allelic variants in GRN gene: case report and review of literature. J Pediatr Endocrinol Metab 2024; 37:280-288. [PMID: 38253347 DOI: 10.1515/jpem-2023-0411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024]
Abstract
OBJECTIVES Neuronal ceroid lipofuscinosis type 11 (NCL11) is a rare disease that presents with progressive cognitive decline, epilepsy, visual impairment, retinal atrophy, cerebellar ataxia and cerebellar atrophy. We present herein a case of NCL11 in a patient diagnosed with neuromotor developmental delay, epilepsy, bronchiolitis obliterans and hypothyroidism. CASE PRESENTATION A 4-year-old male patient was admitted to our clinic with global developmental delay and a medical history that included recurrent hospitalizations for pneumonia at the age of 17 days, and in months 4, 5 and 7. Family history revealed a brother with similar clinical findings (recurrent pneumonia, hypothyroidism, hypotonicity, swallowing dysfunction and neuromotor delay) who died from pneumonia at the age of 22 months. Computed tomography of the thorax was consistent with bronchiolitis obliterans, while epileptic discharges were identified on electroencephalogram with a high incidence of bilateral fronto-centro-temporal and generalized spike-wave activity but no photoparoxysmal response. Cranial MRI revealed T2 hyperintense areas in the occipital periventricular white matter and volume loss in the white matter, a thin corpus callosum and vermis atrophy. A whole-exome sequencing molecular analysis revealed compound heterozygous c.430G>A (p.Asp144Asn) and c.415T>C (p.Cys139Arg) variants in the GRN gene. CONCLUSIONS The presented case indicates that NCL11 should be taken into account in patients with epilepsy and neurodegenerative diseases.
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Affiliation(s)
- İlknur Sürücü Kara
- Department of Pediatric Metabolism, Faculty of Medicine, Ankara University, Ankara, Türkiye
| | - Engin Köse
- Department of Pediatric Metabolism, Faculty of Medicine, Ankara University, Ankara, Türkiye
- Ankara University Rare Diseases Application and Research Center, Ankara, Türkiye
| | - Büşranur Çavdarlı
- Department of Medical Genetics, Ankara Bilkent City Hospital, Ankara, Türkiye
| | - Fatma Tuba Eminoğlu
- Department of Pediatric Metabolism, Faculty of Medicine, Ankara University, Ankara, Türkiye
- Ankara University Rare Diseases Application and Research Center, Ankara, Türkiye
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Sürücü Kara İ, Köse E, Koç Yekedüz M, Eminoğlu FT. A different approach to the evaluation of the genotype-phenotype relationship in biotinidase deficiency: repeated measurement of biotinidase enzyme activity. J Pediatr Endocrinol Metab 2023; 36:1061-1071. [PMID: 37725148 DOI: 10.1515/jpem-2023-0337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/02/2023] [Indexed: 09/21/2023]
Abstract
OBJECTIVES In the present study, we aimed to evaluate the genotype-phenotype relation in patients with biotinidase enzyme deficiency based on repeated biotinidase enzyme measurements. METHODS The hospital file information of patients with biotinidase, enzyme deficiency was assessed retrospectively, and the relationship between the BTD gene mutations analysis results and biotinidase enzyme activity following the first and repeated enzyme activity assessments was analyzed. RESULTS One-hundred-ten patients were included. In the first enzyme evaluation, profound biotinidase enzyme deficiency was identified in 15 (13.6 %), partial biotinidase enzyme deficiency in 63 (57.3 %), and heterozygous biotinidase enzyme deficiency in 32 (29.1 %) of the patients. The BTD genetic analysis revealed 42 (38.2 %) homozygous, 42 (38.2 %) heterozygous, and 26 (23.6 %) compound heterozygous variants. The most common homozygous variant, p.Asp444His, was evaluated with 130 repeated enzyme measurements and was consistent with a partial biotinidase enzyme deficiency in 55.4 % of cases, heterozygous biotinidase enzyme deficiency in 43.8 % of cases, and profound biotinidase enzyme deficiency in one (0.8 %) case. Clinical symptoms developed in 17 patients during follow-up, of which 70.6 % were related to neurodevelopment. The most common variant was homozygous p.Asp444His (29.4 %) among the patients who developed symptoms. CONCLUSIONS This is the first study to date to evaluate the genotype-phenotype relationship in patients with biotinidase deficiency through repeated measurements of biotinidase enzyme activity. The study reveals that biotinidase enzyme activity alone is inadequate for diagnosing biotinidase enzyme deficiency or evaluating disease severity, as genetic investigations are also required for a definitive diagnosis of biotinidase enzyme deficiency.
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Affiliation(s)
- İlknur Sürücü Kara
- Department of Pediatric Metabolism, Ankara University, Faculty of Medicine, Ankara, Türkiye
| | - Engin Köse
- Department of Pediatric Metabolism, Ankara University Faculty of Medicine, Ankara University Rare Diseases Application and Research Center, Ankara, Türkiye
| | - Merve Koç Yekedüz
- Department of Pediatric Metabolism, Ankara University, Faculty of Medicine, Ankara, Türkiye
| | - Fatma Tuba Eminoğlu
- Department of Pediatric Metabolism, Ankara University Faculty of Medicine, Ankara University Rare Diseases Application and Research Center, Ankara, Türkiye
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Öğütlü H, Karatekin Ş, Sürücü Kara İ, McNicholas F. Sluggish cognitive tempo, eating habits, and daytime sleepiness in obese adolescents. Clin Child Psychol Psychiatry 2023; 28:595-609. [PMID: 35638558 DOI: 10.1177/13591045221105194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Rates of obesity have risen steeply in the western world in all age groups. Sluggish Cognitive Tempo (SCT) is characterized by a cluster of symptoms. Daytime sleepiness, commonly seen in obesity, may share a similar origin with sleepiness and daydreaming symptoms of SCT. This study aims to investigate the relationship between obesity, SCT, daytime sleepiness, and eating habits. METHOD Adolescents, aged between 10-17 years, with a BMI >95th centile, were recruited to the study. Clinical interviews were supplemented with standardized questionnaires. RESULTS Of the 35 adolescents, more than one quarter (N = 10, 28.6%) had SCT. Emotional overeating and food enjoyment subscale scores showed moderate correlations with the SCT scores, though these associations were not significant when controlling for ADHD symptoms. Daytime sleepiness score in adolescents with SCT was found to be significantly higher than those without. CONCLUSION Sluggish Cognitive Tempo is frequently present in adolescents with obesity and associated with higher levels of emotional overeating, food enjoyment, and daytime sleepiness. Targeting aspects of SCT might offer additional avenues to assist in weight management programs for youth.
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Affiliation(s)
- Hakan Öğütlü
- Department of Child and Adolescent Psychiatry, 536164Ankara City Hospital, Ankara, Turkey
| | - Şeyma Karatekin
- Department of Pediatrics, 375269Samsun Training and Research Hospital, Samsun, Turkey
| | - İlknur Sürücü Kara
- Division of Pediatric Metabolism, Department of Pediatrics, 37504Ankara University, Ankara, Turkey
| | - Fiona McNicholas
- Child and Adolescent Psychiatry Department, 8797University College of Dublin, Dublin, Ireland.,Children Hospital Ireland, Crumlin, Dublin, Ireland.,SJOG C AMHS, Lucena Rathgar, Dublin, Ireland
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Koç Yekedüz M, Doğulu N, Sürücü Kara İ, Öncül Ü, Bakirarar B, Kullu P, Ar Y, Köse E, Eminoğlu FT. Pros and Cons of Telemedicine for Inherited Metabolic Disorders in a Developing Country During the COVID-19 Pandemic. Telemed J E Health 2022; 28:1604-1612. [PMID: 35363077 DOI: 10.1089/tmj.2021.0610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Introduction: The COVID-19 pandemic has led to considerable changes in the health care system. Experts suggested that individuals protect themselves through social isolation during the pandemic, and consequently, the importance of telemedicine came to be understood for patients with chronic diseases. Telemedicine started to be used in developing countries where the appropriate infrastructure was lacking earlier. The present study investigates the level of satisfaction of patients with inherited metabolic disorders (IMDs) with telemedicine. Methods: This prospective study was conducted by making use of a new video appointment program that ensures the privacy of the patients in video-based consultations. The sociodemographic characteristics of the patients, their clinical status, their views on the telemedicine system, and their levels of satisfaction were questioned. Results: Overall, 174 patients were included in the study. The most common diagnoses were aminoacidopathies, lipid metabolism disorders, biotinidase deficiency, and lysosomal/peroxisomal diseases. More than half of the parents (67.6%) who lived in another city reported accommodation issues when coming to the hospital, and most believed telemedicine would save them time (93.1%) and money for travel (81.6%). The lack of laboratory and radiological tests (83.9%) was stated as the main disadvantage by most parents. Almost all the parents (96.6%) stated that they would opt for telemedicine if it became available in daily practice. The overall satisfaction rate was 94.6 (±10.1)/100. Conclusions: The present research is the most extensive cohort study to date assessing telemedicine in patients with IMDs and it highlights the importance of telemedicine, especially in developing countries during the COVID-19 pandemic.
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Affiliation(s)
- Merve Koç Yekedüz
- Department of Pediatric Metabolism Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Neslihan Doğulu
- Department of Pediatric Metabolism Faculty of Medicine, Ankara University, Ankara, Turkey
| | - İlknur Sürücü Kara
- Department of Pediatric Metabolism Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Ümmühan Öncül
- Department of Pediatric Metabolism Faculty of Medicine, Ankara University, Ankara, Turkey
| | | | - Pinar Kullu
- Department of Computer Engineering, Ankara University, Ankara, Turkey
| | - Yilmaz Ar
- Department of Computer Engineering, Ankara University, Ankara, Turkey
| | - Engin Köse
- Department of Pediatric Metabolism Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Fatma Tuba Eminoğlu
- Department of Pediatric Metabolism Faculty of Medicine, Ankara University, Ankara, Turkey
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Şahin S, Yıldırım M, Bektaş Ö, Sürücü Kara İ, Ceylan AC, Teber S. Intracranial Calcification Associated with 3-Methylcrotonyl-CoA Carboxylase Deficiency. Mol Syndromol 2021; 12:393-398. [PMID: 34899149 DOI: 10.1159/000517272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/18/2021] [Indexed: 11/19/2022] Open
Abstract
3-methylcrotonyl-CoA carboxylase (3-MCC) deficiency is the most frequent organic aciduria detected in newborn screening programs. It demonstrates a variable heterogeneous clinical phenotype, ranging from neonatal onset with severe neurological disorders to asymptomatic adult forms. Herein, we report the first 2 related cases of 3-MCC deficiency presenting with intracranial calcification in the literature. A girl and a boy aged 3 years, 9 months and 4 years were included in the study. The main clinical manifestations were acquired microcephaly, global developmental delay, intractable seizures, mild feeding difficulty, and intermittent dystonic contractions. On physical and neurological examinations, their weights, heights, and head circumferences were below the 3rd percentile, they had acquired microcephaly, truncal hypotonia, upper and lower limb spasticity, hyperreflexia, positive bilateral Babinski signs, and clonus. The detailed biochemical and metabolic tests were unremarkable, except blood 3-hydroxyisovalerylcarnitine (C5OH) was slightly increased in case 1. Cranial computed tomography demonstrated mild cerebral and cerebellar atrophy as well as bilateral periventricular and thalamic calcifications in both cases. We identified a homozygous mutation of c.1015G>A (p.V339M) in the MCCC2gene, and the mutation was confirmed by Sanger sequencing. To the best of our knowledge, our cases are the first reported describing intracranial calcification in cases with 3-MCC deficiency. This report expands on the underlying causes of intracranial calcifications and suggests that 3-MCC deficiency may have intracranial calcifications on bilateral thalamus and periventricular white matters. If clinical findings show intracranial calcification, 3-MCC deficiency should also be kept in mind.
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Affiliation(s)
- Süleyman Şahin
- Department of Pediatric Neurology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Miraç Yıldırım
- Department of Pediatric Neurology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Ömer Bektaş
- Department of Pediatric Neurology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - İlknur Sürücü Kara
- Department of Pediatric Metabolism and Nutrition, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Ahmet Cevdet Ceylan
- Department of Medical Genetics, Ankara City Hospital, Ankara, Turkey.,Department of Medical Genetics, Ankara Yıldırım Beyazit University, Ankara, Turkey
| | - Serap Teber
- Department of Pediatric Neurology, Ankara University Faculty of Medicine, Ankara, Turkey
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