PML and acute promyelocytic leukemia: Acute promyelocytic leukaemia (APL) results from reciprocal translocation between chromosomes 15 and 17, t(15;17) (q24;q21) giving rise to chimeric fusion of oncogene; the promyelocytic leukaemia (PML) gene and cellular differentiation protein; and the retinoid acid receptor alpha (RARA) gene resulting in PML‐RARA fusion gene [3].