GRIN2B and poikiloderma with neutropenia: In addition, exosomal circRNA, chr2:2,744,228–2,744,407 + was upregulated, thus inducing MM-related peripheral neuropathy (PN) via the downstream hsa-miR-6829-3p/GRIN2B axis, which could be associated with the clinical characteristics and prognosis of PN [86].