RB1 and retinoblastoma: In human RB, lncRNA X inactive-specific transcript (XIST) [28], differentiation antagonizing nonprotein coding RNA (DANCR) [29], and homeobox A11 antisense RNA (HOXA11-AS) [30] were found that functioned as ceRNAs for its target miRNA and regulate its endogenous targets and affect the progression of RB.