TABLE 2.

Reported prevalence data of FMR1 expanded alleles among Asian and Asian American populations

Year	Population	Site of recruitment	Number tested	Prevalence
2003 (Huang et al., 2003)	Pregnant women	Taiwan	1,002	Intermediate: 1/46 Premutation: 0/1002
2005 (Tzeng et al., 2005)	Newborn males	Taiwan	10,046	Intermediate: 1/143 Premutation: 1/1674
2012 (Tassone et al., 2012)	Newborn males and females	United States	428 males 368 females	Males: Intermediate: 0/428 Premutation: 1/428 Females: Intermediate: 1/74 Premutation: 1/123
2015 (Huang et al., 2015)	Unaffected males and females	China	534 males 579 females	Males: Premutation:0/534 Females: Premutation: 1/579
2017 (Cheng et al., 2017)	Pregnant women	Hong Kong	2,650	Intermediate: 1/88 Premutation: 1/1325
2018 (Owens et al., 2018)	Women referred for carrier testing	United States	7,961	Intermediate: 1/93 Premutation: 1/419
This study	Women of childbearing age	China	10,145	Intermediate: 1/130 Premutation: 1/634