We looked at the relationship between circRNA expression and clinicopathological features like gender, B2-MG, albumin, hypercalcemia, renal insufficiency, bone lesions, DS stages, ISS stages, and cytogenetic abnormalities like del(17p), t(4;14), and t(14;16) (at least five studies were looked at for each feature) (Table 5). This evidence concerns the gene ALB and Hypercalcemia.