In the context of murine MM, the expression of Glipr1 was found to be absent in the KaLwRij tumour-derived 5TGM1 MM cell line compared to detectable levels in PCs from healthy KaLwRij and WT mice, suggesting that Glipr1 down-regulation may also play a role in the development of murine MM. The gene discussed is GLIPR1; the disease is neoplasm.