Role of common host genome variants in Childhood Acute Lymphoblastic Leukemia
Childhood acute lymphoblastic leukemia (ALL) is a genetically heterogeneous disease, and while somatic alterations inform diagnosis and treatment stratification, germline variants - particularly common host genome variants - rarely influence clinical care. Over the past decade, various host genome variant studies have uncovered numerous common variants associated with ALL susceptibility, treatment efficacy, and toxicity risk. Yet, less than a handful have reached clinical implementation, with TPMT and NUDT15 variants being the only ones widely used clinically. Whether a variant can be readily translated into the clinical setting primarily depends on four features: (1) Phenotype severity, (2) phenotype rarity and the proportion of cases (overall or in subsets of patients) accounted for by genetic variants, (3) the application of the variant as an add-on clinical decision support tool, and (4) the availability, cost, and potential side effects of interventions and/or prophylaxis. Key barriers for such clinical translation include insufficient effect sizes, lack of replication across diverse populations, and lack of well-established treatment modification strategies. However, large-scale international collaborations can generate the necessary statistical power, including enabling more complex bioinformatic approaches, such as polygenic risk scores and more advanced machine learning strategies. In this review, we outline the necessary steps toward bridging the gap between genetic discovery and clinical practice.
Authors
- Ulrik Kristoffer Stoltze (ORCID: https://orcid.org/0000-0001-5862-3292)
- Stefanie V. Junk (ORCID: https://orcid.org/0000-0001-8206-9463)
- Gabriele Escherich (ORCID: https://orcid.org/0000-0003-2167-3805)
- Arndt Borkhardt (ORCID: https://orcid.org/0000-0002-6121-4737)
- Liv Andrés‐Jensen (ORCID: https://orcid.org/0000-0003-3437-8338)
- Melanie M. Hagleitner (ORCID: https://orcid.org/0000-0001-9424-0352)
- Louise Lundgren
- Linea Natalie Toksvang (ORCID: https://orcid.org/0000-0002-9871-7637)
- Marianne Helenius (ORCID: https://orcid.org/0000-0003-3613-8338)
- Nuria Conde Cuevas
- Christina Halsey (ORCID: https://orcid.org/0000-0001-5449-5246)
- Μirella Αmpatzidou (ORCID: https://orcid.org/0000-0002-2480-7883)
- Jonathan Josephs‐Spaulding (ORCID: https://orcid.org/0000-0001-9828-0685)
- Kjeld Schmiegelow (ORCID: https://orcid.org/0000-0002-0829-4993)
- Sophia Polychronopoulou (ORCID: https://orcid.org/0000-0001-9716-9264)
- Ayo Wahlberg (ORCID: https://orcid.org/0000-0001-6862-5208)
- Andishe Attarbaschi (ORCID: https://orcid.org/0000-0002-9285-6898)
- Theis Bech Mikkelsen (ORCID: https://orcid.org/0000-0003-2748-4001)
- Simone Pehn
Institutions
- University of Copenhagen (DK)
- Hospital Sant Joan de Déu Barcelona (ES)
- Goethe-Institute United Kingdom (GB)
- Universität Hamburg (DE)
- Royal Hospital for Children (GB)
- Rigshospitalet (DK)
- University Medical Center Hamburg-Eppendorf (DE)
- Children's Hospital Agia Sophia (GR)
- St Anna Children's Hospital (AT)
- Princess Máxima Center (NL)
- St. Anna Children's Cancer Research Institute
- Heinrich Heine University Düsseldorf (DE)
- Medical University of Vienna (AT)
- University of Glasgow (GB)
Publication Details
- Journal
- Leukemia
- Published
- 2025-12-08
- DOI
- https://doi.org/10.1038/s41375-025-02804-2
- Primary Topic
- Acute Lymphoblastic Leukemia research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Børnecancerfonden
- Novo Nordisk
- Novo Nordisk Fonden
- Interreg