Table 1

Molecular details for the new genomic rearrangements in the 17p13.3 region

CaseGenomic abnormalityGenomic region (bp)*Size (Mb)Detection methodConfirmationInheritanceParental origin
1Interstitial deletionChr17: 1135022–22028351.07244K arrayFISHde novo (FISH)Paternal
2Terminal deletionChr17: 514–20656642.07SNP6.0 arrayFISHde novo (FISH)Paternal
3Interstitial deletionChr17: 1067074–13946330.3344K arrayFISHde novo (FISH)No STS markers in segment
4Interstitial deletionChr17: 842389–22578571.4244K arrayFISHde novo (FISH)NT
5Interstitial deletionChr17: 1136270–21681551.03HumanCytoSNP-12Custom aCGHde novo (MLPA)Paternal
6Interstitial deletionChr17: 1254527–21641390.91250K NspCustom aCGHMaternal (250K Nsp)NA
7Terminal deletionChr17: 18901–18209031.80250K NspMLPAParental samples unavailableNT. Parental samples unavailable
8Terminal deletion with Concurrent duplicationChr17: 29169–2123816 Chr17: 2124215–33215602.09 1.20MLPA 244K arrayFISH MLPAde novo (FISH) de novo (MLPA)Maternal Maternal
9Interstitial duplicationChr17: 294421–13718951.08244K arrayMLPAde novo (MLPA)Maternal
10Interstitial duplicationChr17: 738991–28135182.07BAC subtelomeric arrayFISHde novo (FISH)Paternal
11Interstitial duplicationChr17: 936249–15731870.64HumanCytoSNP-12Custom aCGHNot Maternal (MLPA)Not Maternal. Paternal sample unavailable.
12Interstitial duplicationChr17: 1288474–15584590.27370K arrayCustom aCGHMaternal (370K array)NA
13Interstitial duplicationChr17: 1123160–1182563 (min) Chr17: 1105258–1193712 (max)0.059 (min) 0.088 (max)180K array180K arrayMaternal (180K array)NA
  • * Breakpoints and copy number variation size determined on the basis of high-density custom oligonucleotide aCGH (cases 1, 3–6 and 8–12), multiplex ligation-dependent probe amplification (MLPA) analysis (case 2) and 180K array analysis (case 13). In case 7, the genomic coordinates are taken from the 250K Nsp array.

  • Microdeletion first detected using the DiGeorge syndrome MLPA kit (MRC-Holland, http://www.mrc-holland.com/). aCGH, array comparative genomic hybridisation; FISH, fluorescent in situ hybridisation; NA, not applicable; NT, not tested.