Table 1

 Transmission of VEGF alleles from heterozygous parents to TOF affected children

Gene variationRisk alleleAllele frequency (%)Transmitted risk allelesUntransmitted risk allelesχ2p Value
The exact number of transmitted and untransmitted risk alleles with their relative frequency between brackets is indicated.
−2578 C/A−2578A0.4987 (0.59)61 (0.41)4.60.016
−1154 G/A−1154A0.3273 (0.59)50 (0.41)4.30.019
−634 G/C−634G0.6677 (0.59)54 (0.41)4.10.022