SHMT1 C1420T polymorphism contributes to the risk of non-Hodgkin lymphoma: evidence from 7309 patients

Cancer Communications

Table 1 Characteristics of the 8 publications included in the meta-analysis

Study^a	Country	Ethnicity	Source of controls	Sample sizes (cases/controls)	HWE (controls)	MAF
Skibola (2004) [22]	USA	Caucasian	Population-based	333/729	0.509	0.32
Lightfoot (2005) [23]	USA	Caucasian	Population-based	589/754	0.181	0.32
Lee (2007) [24]	Australia	Caucasian	Population-based	553/498	0.129	0.32
Lim (2007) [25]	USA	Mixed^b	Population-based	743/629	0.283	0.31
Berglund (2009) [26]	Sweden	Caucasian	Population-based	258/241	0.630	0.32
Weiner (2011) [27]	Russia	Caucasian	Population-based	141/504	0.357	0.33
Li (2013) [28]	USA	Mixed^b	Population-based	446/517	0.044	0.30
Niclot (2006) [29]	France	Caucasian	Population-based	169/205	0.547	0.31

USA the United States of America, HWE Hardy–Weinberg equilibrium, MAF minor allele frequency
^aEach study is presented as the first author’s last name followed by the year of publication
^bMixed: in the study, the genotyping data were mixed from different ethnic populations

ISSN: 2523-3548