HAS1 and monoclonal gammopathy: Herein, we show that three HAS1 intron3 SNPs (rs11084110, rs11084109 and rs11669079) are significantly more frequent in patients with systemic B-cell malignancies or in members of a four-generation Icelandic kindred affected by a monoclonal gammopathy-prone phenotype [2]; [3] than in healthy donors, unaffected Icelandic family members or patients with solid tumors.