CASE REPORT
Clinical manifestations, toxicities, and outcome of two children with Nijmegen breakage syndrome and lymphoid malignancies – case reports
1
Student Scientific Society, Department of Paediatric Haematology, Oncology, and Transplantology, Medical University of Lublin, Poland
2
Department of Paediatric Haematology, Oncology, and Transplantology, Medical University of Lublin, Poland
3
Laboratory of Genetic Diagnostics, Department of Paediatric Haematology, Oncology, and Transplantology, Medical University of Lublin, Poland
Submission date: 2021-07-22
Final revision date: 2021-08-13
Acceptance date: 2021-08-30
Publication date: 2022-03-23
Pediatr Pol 2022;97(1):48-52
KEYWORDS
TOPICS
ABSTRACT
Nijmegen breakage syndrome (NBS) is a rare disease with an autosomal recessive pattern of inheritance caused by mutations in the NBN gene.
We report 2 patients with NBS and T-cell lymphoblastic lymphoma (T-LBL), in whom diagnosis and therapy were difficult challenges. Both patients were diagnosed with NBS by mutation analysis of the NBN gene, which revealed homozygosity for a typical 5 base pair deletion (657del5). The lymph node biopsy revealed T-LBL, and both patients were treated according to EURO-LB 02. Complete remission was achieved in the first patient. In the second case, bone marrow relapse was observed, and the patient died due to disease progression.
In conclusion, patients with NBS should be closely monitored because of a higher frequency of lymphoma than in the general population. The described cases indicate the importance of identifying predictive markers of cancers and developing treatment regimens for patients with NBS and malignancies.
We report 2 patients with NBS and T-cell lymphoblastic lymphoma (T-LBL), in whom diagnosis and therapy were difficult challenges. Both patients were diagnosed with NBS by mutation analysis of the NBN gene, which revealed homozygosity for a typical 5 base pair deletion (657del5). The lymph node biopsy revealed T-LBL, and both patients were treated according to EURO-LB 02. Complete remission was achieved in the first patient. In the second case, bone marrow relapse was observed, and the patient died due to disease progression.
In conclusion, patients with NBS should be closely monitored because of a higher frequency of lymphoma than in the general population. The described cases indicate the importance of identifying predictive markers of cancers and developing treatment regimens for patients with NBS and malignancies.
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