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Kager L, Jimenez‐Heredia R, Zeitlhofer P, Novak W, Eder SK, Segarra‐Roca A, Frohne A, Nebral K, Haimel M, Geyeregger R, Roetzer‐Londgin K, Haas OA, Boztug K. A single-center cohort study of patients with hereditary spherocytosis in Central Europe reveals a high frequency of novel disease-causing genotypes. Hemasphere 2024; 8:e31. [PMID: 38434532 PMCID: PMC10878193 DOI: 10.1002/hem3.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/22/2023] [Indexed: 03/05/2024] Open
Affiliation(s)
- Leo Kager
- St. Anna Children's HospitalMedical University of ViennaViennaAustria
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
| | - Raúl Jimenez‐Heredia
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
- Department of Pediatrics and Adolescent MedicineMedical University of ViennaViennaAustria
| | | | - Wolfgang Novak
- St. Anna Children's HospitalMedical University of ViennaViennaAustria
| | - Sebastian K. Eder
- St. Anna Children's HospitalMedical University of ViennaViennaAustria
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
| | - Anna Segarra‐Roca
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
| | - Alexandra Frohne
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
| | | | - Matthias Haimel
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of SciencesViennaAustria
| | - René Geyeregger
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
| | - Katharina Roetzer‐Londgin
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
- Labdia LabordiagnostikViennaAustria
| | - Oskar A. Haas
- St. Anna Children's HospitalMedical University of ViennaViennaAustria
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
- Labdia LabordiagnostikViennaAustria
| | - Kaan Boztug
- St. Anna Children's HospitalMedical University of ViennaViennaAustria
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
- Department of Pediatrics and Adolescent MedicineMedical University of ViennaViennaAustria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of SciencesViennaAustria
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Häuser F, Rossmann H, Adenaeuer A, Shrestha A, Marandiuc D, Paret C, Faber J, Lackner KJ, Lämmle B, Beck O. Hereditary Spherocytosis: Can Next-Generation Sequencing of the Five Most Frequently Affected Genes Replace Time-Consuming Functional Investigations? Int J Mol Sci 2023; 24:17021. [PMID: 38069343 PMCID: PMC10707146 DOI: 10.3390/ijms242317021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/22/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
Congenital defects of the erythrocyte membrane are common in northern Europe and all over the world. The resulting diseases, for example, hereditary spherocytosis (HS), are often underdiagnosed, partly due to their sometimes mild and asymptomatic courses. In addition to a broad clinical spectrum, this is also due to the occasionally complex diagnostics that are not available to every patient. To test whether next-generation sequencing (NGS) could replace time-consuming spherocytosis-specific functional tests, 22 consecutive patients with suspected red cell membranopathy underwent functional blood tests. We were able to identify the causative genetic defect in all patients with suspected HS who underwent genetic testing (n = 17). The sensitivity of the NGS approach, which tests five genes (ANK1 (gene product: ankyrin1), EPB42 (erythrocyte membrane protein band4.2), SLC4A1 (band3), SPTA1 (α-spectrin), and SPTB (β-spectrin)), was 100% (95% confidence interval: 81.5-100.0%). The major advantage of genetic testing in the paediatric setting is the small amount of blood required (<200 µL), and compared to functional assays, sample stability is not an issue. The combination of medical history, basic laboratory parameters, and an NGS panel with five genes is sufficient for diagnosis in most cases. Only in rare cases, a more comprehensive functional screening is required.
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Affiliation(s)
- Friederike Häuser
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Heidi Rossmann
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Anke Adenaeuer
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Annette Shrestha
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Dana Marandiuc
- Transfusion Center, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Claudia Paret
- Department of Pediatric Hematology, Oncology & Hemostaseology, Center for Pediatric and Adolescent Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Jörg Faber
- Department of Pediatric Hematology, Oncology & Hemostaseology, Center for Pediatric and Adolescent Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Karl J. Lackner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
| | - Bernhard Lämmle
- Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
- Haemostasis Research Unit, University College London, London WC1E6BT, UK
| | - Olaf Beck
- Department of Pediatric Hematology, Oncology & Hemostaseology, Center for Pediatric and Adolescent Medicine, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
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