The schema used to clinically screen patients for HMMSs based on their personal and family histories. This schema captures the general principles we use in our institution to evaluate all HM patients for HMMSs. *See Table 3. **These samples may not be accepted by some clinical laboratories. CNV, copy number variation; FDR, first-degree relatives; FFPE, formalin-fixed, paraffin-embedded; MSC, mesenchymal stem cell; PBSC, peripheral blood stem cell; SDR, second-degree relatives; WES, whole-exome sequencing; WGS, whole-genome sequencing.