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Bortezomib induced peripheral neuropathy and single nucleotide polymorphisms in PKNOX1
Xiang Zhou1, Seungbin Han1, Nadine Cebulla2
1Department of Internal Medicine II, University Hospital of Würzburg, Würzburg, Germany.
Abstract:
We analyzed single nucleotide polymorphisms (SNPs) in PKNOX1 (rs2839629) and in the intergenic region between PKNOX1 and CBS (rs915854) by Sanger sequencing in 88 patients with multiple myeloma treated with bortezomib. All patients (n = 13) harboring a homozygous mutation in PKNOX1 (rs2839629) also had a homozygous mutated rs915854 genotype. Homozygous mutated genotypes of rs2839629 and rs915854 were significantly enriched in patients with painful peripheral neuropathy (PNP) (P < 0.0001), and homozygous mutated rs2839629 genotype was significantly enriched in patients with pain compared to patients with no pain (P = 0.04). In summary, both SNPs rs2839629 and/or rs915854 may be potential biomarkers predicting an increased risk to develop painful PNP under bortezomib.
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