For the combined meta-analyses of the CLIC data and previous published papers of ALL we added estimates from six additional studies for the investigation of maternal exposure, –, , and three for those of paternal exposure, , , , while those of AML contained estimates from an additional four studies for maternal exposure, , , and three for paternal exposure,, , but excluded one of the CLIC studies from the paternal analyses. The resulting summary ORs for maternal exposures during pregnancy and paternal exposures around conception and the risk of ALL in the offspring were 1.35 (95% CI 0.96, 1.89, I2 =43.0%) () and 1.23 (95% CI 0.99, 1.53 I2 =68.3%) () respectively. The summary estimates for maternal and paternal exposures respectively and the risk of AML in the offspring were 3.30 (95% CI 2.15, 5.06, I2 =0.0%) () and 1.14 (95% CI 0.88, 1.49 I2 =24.0%) ().