Journal
BRITISH JOURNAL OF HAEMATOLOGY
Volume 186, Issue 5, Pages 695-705Publisher
WILEY
DOI: 10.1111/bjh.15972
Keywords
CRBN protein; SNPs; thalidomide; adverse effects; peripheral neuropathy; multiple myeloma
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Thalidomide is commonly used in treatment of multiple myeloma (MM). This study aimed to analyse the influence of clinical and molecular factors - single nucleotide polymorphisms (SNPs) of the CRBN gene: rs6768972 and rs1672753, on the risk of adverse effects (AEs) of thalidomide-based chemotherapy in patients with MM. The study group included 82 patients receiving CTD (thalidomide, cyclophosphamide, dexamethasone) as first line treatment. The intensity of haematological and non-haematological AEs was assessed according to the Common Terminology Criteria for Adverse Events v4.03. Multivariate analysis showed that patients with the CRBN CC genotype (rs1672753) had more than a 14-fold higher risk of peripheral polyneuropathy compared to patients with other variants of the investigated SNP [odds ratio (OR) = 14 center dot 29]. Carriers of this genotype were burdened with significantly (about 17-fold) higher risk of diarrhoea during treatment (OR = 16 center dot 67). The presence of CRBN AA (rs6768972) or TT (rs1672753) genotypes was associated with about 333-fold and 250-fold lower risk of constipation in the course of therapy (OR = 0 center dot 003; OR = 0 center dot 004, respectively). Selected CRBN SNPs may be useful in assessing the probability of AEs in the form of peripheral polyneuropathy and gastrointestinal motility disorders associated with the use of thalidomide in patients with MM.
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