In general 70% of sSMC carriers are clinically normal. The figures listed above
are based on the bias, that mainly clinically aberrant cases are studied and reported in literature!

UPD (uniparental disomy) cases:

UPD(X)mat

UPD(X)pat

UPD(X)mat or pat

the probably non-dosage sensitive pericentric region of X-chromosome
schematic cytogenetic depiction	short (= p-) arm het long (= q-) arm p11.4 p11.2 cen q13 q21 no clinical signs clinical signs
schematic molecular- cytogenetic depiction	Data is converted between genome versions by UCSC browser! Note the changes defined there for centromere-sizes; due to that and due to 'new insertions and deletions', positions are not always seeming logical comparing different versions listed  genomic version critical region p-arm uncritical region p-arm centromere uncritical region q-arm critical region q-arm NCBI 36/ hg18 50.90 56.60 56.60 - 65.10 65.10 unknown GRCh 37/ hg19 50.88 56.58 58.10 - 64.60 64.60 unknown GRCh 38/ hg38 51.14 56.56 58.10 - 63.80 63.80 unknown   Positions given in megabasepair (Mbp) acc. to cases marked as ***