“…On one hand, literature review shows intra‐familial variability, including co‐segregation of classic and partial AOS in a few families [Santos et al, ; Lin et al, ]. Notably, some members displayed full blown features of AOS, while others had CVMs and aplasia cutis without limb defects [Bruel et al, ; Heras Mulero et al, ; Digilio et al, ]. On the other hand, concordant partial AOS can also segregate in the same family, as illustrated by a mother–son pair sharing aplasia cutis congenital and aortic coarctation with normal limbs [Dallapiccola et al, ; Digilio et al, ].…”