Results obtained by microsatellite analysis
| Primer | Locus | cM | Alleles |
| D18S71 | 18p11.23p11.22 | 47 | bc,bd,ac |
| D18S1104 | 18p11.1q11.2 | 52.8 | a b,bd,ac |
| D18S869 | 18q11.1q11.2 | 52.2 | bc,bc,ab |
| D18S1143 | 18 | 66.7 | bc,bd,ac |
| D18S1111 | 18q21.1q21.1 | 67.09 | ab,ac,bb |
| D18S455 | 18q21.1q21.1 | 68.6 | ab,aa,bb |
| D18S473 | 18q21.1q21.1 | 71.42 | ab,ab,bb |
| D18S474 | 18q21.1q21.1 | 71.3 | cd,bc,ad |
| D18S35 | 18q21.2q21.2 | 78.54 | ac,ab,cc |
The alleles are given in the order patient, mother, father. The markers showing intenser maternal alleles in the patient are given in italics and the intenser alleles themselves in bold.
Allele designations (a to d) are arbitrary. Genetic mapping according to the sex averaged linkage map by the Genetic Location Database (LDB).