Table 3. Number of cases of 22q11.2DS diagnosed per year in the collaborating laboratories, compared with the number of cases of 21 trisomy diagnosed in France over the same period.

	2010	2011	2012	Average per year	Average per year (prenatal and PoD)
22q11DS
Prenatal diagnosis	31	37	41	36	108
Postnatal diagnosis	74	65	78	72
Trisomy 21a
Prenatal diagnosis	2369	2477	1971	2272	2758
Postnatal diagnosis	435	535	488	486

^aData from the French health authorities (Agence de la Biomédecine^{27, 28, 29, 30}).