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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Genet Med. 2013 Aug 8;16(2):164–169. doi: 10.1038/gim.2013.97

Table 3.

Number and percentage of naturally-conceived and ART-conceived participants with PWS from each site with a deletion or maternal UPD/ imprinting defect.

Genetic
Subtype
of PWS		 PWSA (USA)
N (%)		 RDCRN
N (%)		 UCIMC
N (%)		 TOTAL
N (%)
Naturally
conceived		 ART
conceived		 Naturally
conceived		 ART
conceived		 Naturally
conceived		 ART
conceived		 Naturally
conceived		 ART
conceived
Deletion 726
(66.8)		 7
(43.7)		 62
(61.4)		 1
(100.0)		 23
(52.3)		 0
(0)		 811
(65.8)		 8
(44.4)
Maternal
UPD/
Imprinting
Defect		 361
(33.2)		 9
(56.3)		 39
(38.6)		 0
(0)		 21
(47.7)		 1
(100.0)		 421
(34.2)		 10
(55.6)
Total 1,087
(100.0)		 16
(100.0)		 101
(100.0)		 1
(100.0)		 44
(100.0)		 1
(100.0)		 1,232
(100.0)		 18
(100.0)