Table 3

Interphase nuclei of control individuals with structurally normal chromosomes 22 showing a double (ds) and a single signal (ss) for probes within the commonly deleted 22q11.2 region and at flanking positions

Case, gender*FISH probes†Percentage of interphase nuclei‡ showing either ds/ss, ds/ds, or ss/ss for individual probes2×ds on one chr. 22 and 2×ss on the other chr. 22 for combinations of two probes‡§
ds/ssds/dsss/ss
*M, male; F, female; †The relative location of the probes is as follows: “D22S427”: proximal to the LCRI; LSI DiGeorge/VCFS: within the deleted region, proximal to the breakpoint of the t(11;22); ZNF74: within the commonly deleted region, distal to the breakpoint of the t(11;22); “D22S936”: within the commonly deleted region, proximal to the LCRII8,17; ARSA: distal to the LCRII, 22q13.3; ‡In brackets: total number of interphase nuclei analysed; §Out of the 10 possible combinations of ds and ss for two probes on the two chromosomes 22, only the combination ds/ds on one chromosome 22 and ss/ss on the other chromosome 22 is indicated being the most frequently detected combination in each case.
21, FD22S42772% (201)7% (201)21% (201)
LSI DiGeorge/VCFS88% (115)2% (115)10% (115)
ZNF74 67% (101)15% (101)18% (101)
ARSA 74% (201)2% (201)24% (201)
D22S427” and ZNF7452% (101)
D22S427” and ARSA57% (96)
LSI DiGeorge/VCFS and ARSA61% (100)
22, FD22S42767% (303)10% (303)23% (303)
LSI DiGeorge/VCFS89% (115)4% (115)7% (115)
ZNF74 58% (100)7% (100)35% (100)
D22S93670% (91)3% (91)27% (91)
ARSA 69% (209)8% (209)23% (209)
D22S427” and ZNF7438% (98)
D22S427” and “D22S93664% (91)
D22S427” and ARSA46% (106)
LSI DiGeorge/VCFS and ARSA49% (100)
23, MLSI DiGeorge/VCFS84% (106)4% (106)12% (106)
ARSA 79% (108)4% (108)17% (108)
LSI DiGeorge/VCFS and ARSA60% (101)
24, FLSI DiGeorge/VCFS79% (111)6% (111)15% (111)
ARSA 75% (113)10% (113)15% (113)
LSI DiGeorge/VCFS and ARSA53% (105)
25, FLSI DiGeorge/VCFS88% (103)2% (103)10% (103)
ARSA 76% (104)5% (104)19% (104)
LSI DiGeorge/VCFS and ARSA57% (103)
26, FLSI DiGeorge/VCFS81% (117)2% (117)17% (117)
ARSA 78% (115)2% (115)20% (115)
LSI DiGeorge/VCFS and ARSA50% (113)
27, MLSI DiGeorge/VCFS84% (117)0% (117)16% (117)
ARSA 78% (118)3% (118)19% (118)
LSI DiGeorge/VCFS and ARSA49% (113)
28, MLSI DiGeorge/VCFS85% (114)2% (114)13% (114)
ARSA 83% (115)2% (115)15% (115)
LSI DiGeorge/VCFS and ARSA58% (112)
29, MLSI DiGeorge/VCFS88% (104)3% (104)9% (104)
ARSA 83% (104)4% (104)13% (104)
LSI DiGeorge/VCFS and ARSA53% (99)
30, MLSI DiGeorge/VCFS80% (108)1% (108)19% (108)
ARSA 71% (108)2% (108)27% (108)
LSI DiGeorge/VCFS and ARSA51% (107)