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J Med Genet 39:e18 doi:10.1136/jmg.39.4.e18
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Absence of 22q11 deletions in 211 patients with developmental delay analysed using PCR

Table 1

Referral groups of 334 patients tested for 22q11 deletions by FISH or PCR

Group No of patients Initially analysed by FISH Deleted by FISH Analysed by PCR Deleted by PCR Total deleted
Developmental delay 212 1 0 211 0 0
Psychosis 16 1 1 15 1 2
Thymic hypoplasia 21 6 0 15 0 0
Cleft palate 85 35 1 50 0 1
Total 334 43 2 291 1 3

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