Supplementary material Genotyping and control quality for replication analysis: Mexico City Childhood Asthma Study: A total of 498 complete case-parent trios with previously confirmed parentage and DNA were genotyped for 561,466 SNPs using the Illumina HumanHap 550K beadChip, version 3. DNA was extracted using Gentra Puregene kits (Gentra Systems, Minneapolis, Minnesota). The subjects studied were genotyped with an average call rate of 99.7%, missingness, 0.1%, MAF, 0.001%, HWE p-value (in parents only),10-10, Mendelian errors in more than two families and heterozygous genotype calls for chromosome X SNPs in more than one male[1, 2]. Genes-environments & Admixture in Latino Americans (GALA II) study: GALA II subjects were genotyped using the Axiom LAT1 array (World Array 4, Affymetrix, Santa Clara, Calif) which includes 817,810 single nucleotide polymorphisms (SNPs) and was specifically designed to capture genetic variation in Latino populations. SNPs that did not pass quality control procedures were removed from the analyses using the following criteria: failing Axiom quality controls, <95% call rate or deviation from Hardy-Weinberg equilibrium (p<10-6) within each defined population (Puerto Rican, Mexican, and other Latino). Therefore, genotypes for 723,888 high-quality autosomal SNPs were available for the analyses. SNPs not directly genotyped were imputed using all populations available from 1000 Genomes Project Phase I v3 (ref: The 1000 Genomes Project Consortium. Nature 2010; 467:1061-73) as reference by first phasing the genotypes using the software SHAPE- IT[3] and then imputing with IMPUTE2. Association testing was performed using PLINK (ref. Purcell S. PLINK: a toolset for whole-genome association and population-based linkage analysis. American Journal of Human Genetics, 81) only for those variants that had a high quality imputation score (info score ≥0.4)[4, 5]. Table S1: Quality Control steps for SNPs. Control quality steps MAF HW Low genotyping for SNPs Chromosomes X and Y cutoff < 1% p-value < 10-4 > 10% excluded all nº of SNPs 354,422 3597 365 47.336 Table S2: The 100 SNPs that are most associated with childhood asthma symptoms. Rank Chromosome SNP Position (bp) 1 14 rs1999071 23129207 2 15 rs10519031 60183005 3 15 rs8029377 60191985 4 3 rs77165709 159452876 5 10 rs10159952 77562470 6 9 rs1329568 37037976 7 7 rs1425883 49754984 8 7 rs1543902 49754752 9 18 rs76227669 10787366 10 9 rs4878674 37036329 11 10 rs1244495 7881339 12 1 rs269330 68548590 13 7 rs10268364 28708465 14 7 rs41335 28704468 15 4 rs72998173 173715118 16 3 rs4373023 34077223 17 9 rs1329567 37038326 18 9 rs2381598 37041246 19 15 rs12901887 56941976 20 1 rs79530846 171950308 21 4 rs6535350 83439160 22 15 rs1968687 58822697 23 2 rs113750103 202398743 24 1 rs78521816 171414740 25 7 rs114576775 54243876 Risk allele C C C T A T T G T T G T C C G T A C G T G G T A A Gene INTERGENIC INTERGENIC INTERGENIC IQCJ-SCHIP1 C10orf11 LOC100130458 INTERGENIC INTERGENIC PIEZO2 INTERGENICX5 TAF3 GNG12-AS1 CREB5 CREB6 GALNTL6 INTERGENIC LOC100130458 INTERGENIC ZNF280D vDNM3 TMEM150C LIPC ALS2CR11 INTERGENIC INTERGENIC Odds ratio 1.782 3.008 2.495 2.275 2.041 1.933 0.6043 0.6044 4.063 1.9 0.6137 1.749 1.593 0.6373 1.758 1.57 1.969 1.968 0.5567 3.078 1.593 1.542 2.391 2.299 4.023 CI(95%) (1.453 – 2.185) (2.017 – 4.487) (1.763 – 3.53) (1.661 – 3.117) (1.533 – 2.717) (1.473 – 2.537) (0.4908 – 0.7439) (0.4907 – 0.7444) (2.241 – 7.366) (1.446 – 2.497) (0.4985 – 0.7555) (1.377 – 2.221) (1.305 – 1.945) (0.5254 – 0.773) (1.38 – 2.239) (1.294 – 1.906) (1.47 – 2.636) (1.47 – 2.636) (0.4318 – 0.7177) (1.882 – 5.035) (1.299 – 1.954) (1.275 – 1.864) (1.629 – 3.509) (1.594 – 3.317) (2.179 – 7.428) p 2.834E-08 6.676E-08 2.454E-07 3.045E-07 1.016E-06 2.02E-06 2.037E-06 2.164E-06 3.881E-06 4.027E-06 4.169E-06 4.669E-06 4.671E-06 4.793E-06 4.848E-06 4.977E-06 5.46E-06 5.474E-06 6.224E-06 7.542E-06 7.816E-06 7.826E-06 8.431E-06 8.483E-06 8.642E-06 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 3 20 7 5 9 3 15 11 15 3 20 7 3 1 3 7 9 1 14 1 6 12 9 4 11 3 15 rs80316500 rs1555852 rs78980017 rs10069226 rs4880052 rs7622659 rs35743173 rs7928089 rs4775232 rs9827639 rs942992 rs58285948 rs9815657 rs78063878 rs6767038 rs77188806 rs1948308 rs17097444 rs1681581 rs116375634 rs113623387 rs78201583 rs2774241 rs75957247 rs58478357 rs16831149 rs8042498 159982507 19536127 54227948 31271333 37036285 45357777 101324457 68574429 60310375 45342749 19564963 7305712 45345904 172018390 159453369 64926662 87616257 69918002 23118663 154273469 43162490 20700554 93665453 114692320 119628335 159976271 29605931 C T G A A A A A C T T C T G T T T C G T G C A T C T A IFT80 SLC24A3 INTERGENIC CDH6 INTERGENIC INTERGENIC LOC440313 CPT1A INTERGENIC INTERGENIC SLC24A3 INTERGENIC INTERGENIC DNM3 SCHIP1 INTERGENIC NTRK2 INTERGENIC INTERGENIC INTERGENIC CUL9 PDE3A INTERGENIC INTERGENIC LOC101929156 IFT80 FAM189A1 1.594 1.72 4.008 2.344 1.893 2.324 2.498 1.55 1.525 2.372 1.787 2.222 2.37 3.126 1.561 4.664 0.6569 3.487 1.694 3.085 1.535 2.644 1.758 1.664 1.664 1.564 2654 (1.298 – 1.958) (1.354 - 2.186) (2.171 - 7.4) (1.606 – 3.421) (1.425 – 2.515) (1.596 – 3.383) (1.661 – 3.756) (1.275 – 1.886) (1.263 – 1.842) (1.612 – 3.49) (1.378 – 2.316) (1.555 – 3.176) (1.611 – 3.486) (1.875 – 5.211) (1.278 – 1.906) (2.337 – 9.307) (0.544 – 0.7932) (1.988 – 6.116) (1.335 – 2.149) (1.853 – 5.136) (1.264 – 1.864) (1.701 – 4.109) (1.361 – 2.271) (1.32 – 2.097) (1.32 – 2.099) (1.275 – 1.919) (1.698 – 4.148) 8.742E-06 8.959E-06 9.092E-06 1.013E-05 1.078E-05 1.083E-05 1.09E-05 1.118E-05 1.143E-05 1.159E-05 1.161E-05 1.172E-05 1.187E-05 1.233E-05 1.245E-05 1.252E-05 1.259E-05 1.316E-05 1.435E-05 1.482E-05 1.51E-05 1.546E-05 1.56E-05 1.62E-05 1.67E-05 1.801E-05 1.824E-05 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 4 8 9 7 1 2 4 6 17 2 7 5 5 5 4 1 20 4 10 9 3 2 8 15 11 7 13 rs13124037 rs59811079 rs7860117 rs77053500 rs115763417 rs77540829 rs78129004 rs2273709 rs115798120 rs75681688 rs982947 rs17341817 rs11950703 rs2162716 rs12506762 rs3004245 rs6046176 rs7655284 rs1244480 rs11140831 rs74887681 rs114446331 rs115506651 rs115302036 rs7127256 rs7780465 rs56087514 173085238 1625732 87770429 7903345 30939086 202400872 81117017 43184132 43405024 202383927 28708856 103579857 103576747 94762306 173712840 9111626 19532518 105869702 7870324 87647454 52890196 43225774 56047932 60183951 90525490 7076459 27778960 T G G A A A A C T A C T T C T A C G T G T C G T A T C GALNTL6 DLGAP2 INTERGENIC LOC729852 INTERGENIC ALS2CR11 PRDM8 CUL9 INTERGENIC ALS2CR11 CREB5 INTERGENIC INTERGENIC FAM81B GALNTL6 SLC2A5 SLC24A3 INTERGENIC TAF3 INTERGENIC TMEM110-MUSTN1 INTERGENIC XKR4 INTERGENIC INTERGENIC INTERGENIC INTERGENIC 0.6454 0.6484 1.801 4.725 2.705 2.582 4.149 1.525 1.574 2.623 0.6451 2.543 2.543 1.559 1.513 0.6425 1.665 1.517 1.515 0.6083 5.34 3.541 3.407 3.186 1.507 1.538 0.6346 (0.5283 – 0.7886) (0.5317 – 0.7907) (1.376 – 2.359) (2.319 – 9.629) (1.714 – 4.271) (1.67 – 3.991) (2.159 – 7.975) (1.256 – 1.851) (1.278 – 1.94) (1.682 – 4.091) (0.5271 – 0.7896) (1.654 – 3.911) (1.654 – 3.911) (1.27 – 1.913) (1.25 – 1.833) (0.5237 – 0.7882) (1.315 – 2.11) (1.25 – 1.841) (1.249 – 1.837) (0.4828 – 0.7663) (2.448 – 11.65) (1.965 – 6.379) (1.924 – 6.032) (1.856 – 5.468) (1.245 – 1.825) (1.258 – 1.881) (0.5133 – 0.7846) 1.831E-05 1.863E-05 1.87E-05 1.907E-05 1.928E-05 1.971E-05 1.975E-05 2E-05 2.049E-05 2.111E-05 2.122E-05 2.126E-05 2.126E-05 2.196E-05 2.207E-05 2.215E-05 2.378E-05 2.438E-05 2.439E-05 2.463E-05 2.557E-05 2.567E-05 2.616E-05 2.626E-05 2.652E-05 2.652E-05 2.654E-05 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1 9 3 2 9 7 14 15 7 5 6 10 4 9 4 8 3 20 1 3 6 rs80295800 rs424539 rs116448590 rs16986498 rs7873362 rs6956273 rs1465118 rs10518870 rs115972708 rs73767458 rs9472022 rs79846008 rs74426337 rs4419891 rs77924825 rs2952238 rs76336861 rs529058 rs74081353 rs9867680 rs6914964 235771726 14442595 142841697 19665812 74918896 63435537 68032874 57017888 65372483 82346803 43152573 128542978 170929983 87609384 170923535 10095328 45368350 926945 68544206 45361222 43146387 G C G G T T A G A A G A T T C A G A G T G GNG4 INTERGENIC CHST2 LOC101928196 LINC01504 INTERGENIC PLEKHH1 ZNF280D VKORC1L1 INTERGENIC CUL9 LOC728065 MFAP3L NTRK2 MFAP3L MSRA INTERGENIC INTERGENIC LOC100289178 INTERGENIC SRF 1.925 0.6509 5.27 0.4067 1.765 1.6 1.508 0.5888 4.399 2.574 1.506 2.679 3.031 1.531 3.027 1.735 2.055 2.098 2.02 2.046 1.615 (1.418 – 2.614) (0.5323 – 0.7958) (2.417 – 11.49) (0.2665 – 0.6204) (1.352 – 2.306) (1.283 – 1.995) (1.243 – 1.829) (0.459 – 0.7554) (2.187 – 8.85) (1.648 – 4.022) (1.241 – 1.828) (1.681 – 4.268) (1.793 – 5.123) (1.251 – 1.872) (1.791 – 5.118) (1.336 – 2.253) (1.46 – 2.892) (1.475 – 2.982) (1.446 – 2.821) (1.455 – 2.878) (1.285 – 2.029) 2.718E-05 2.833E-05 2.929E-05 2.983E-05 3.031E-05 3.046E-05 3.074E-05 3.085E-05 3.261E-05 3.287E-05 3.357E-05 3.368E-05 3.477E-05 3.477E-05 3.538E-05 3.587E-05 3.61E-05 3.678E-05 3.696E-05 3.917E-05 3.927E-05 Table S3: Combined analysis. SCAALA Chromosome 1 1 1 2 3 3 4 4 7 7 7 7 7 9 9 9 9 10 10 14 14 SNP rs269330 rs78521816 rs79530846 rs113750103 rs4373023 rs77165709 rs6535350 rs72998173 rs10268364 rs114576775 rs1425883 rs1543902 rs41335 rs1329567 rs1329568 rs2381598 rs4878674 rs10159952 rs1244495 rs10131634 rs10131924 Risk allele T T A T T T G G C A T G C A T C T A G T A OR 1.75 2.30 3.08 2.39 1.57 2.28 1.59 1.76 1.59 4.02 0.60 0.60 0.64 1.97 1.93 1.97 1.90 2.04 0.61 1.66 1.66 p-value 4.67E-06 8.48E-06 7.54E-06 8.43E-06 4.98E-06 3.05E-07 7.82E-06 4.85E-06 4.67E-06 8.64E-06 2.04E-06 2.16E-06 4.79E-06 5.46E-06 2.02E-06 5.47E-06 4.03E-06 1.02E-06 4.17E-06 1.39E-06 1.51E-06 GALA II Risk allele T A T T C T G G C A C T G G G T G A T A OR 1.130 1.000 1.084 0.756 1.040 0.907 0.900 1.119 1.059 1.161 1.041 1.039 1.032 0.999 0.976 1.002 0.972 1.370 1.036 1.036 p-value 0.289 0.999 0.783 0.158 0.520 0.507 0.168 0.130 0.345 0.705 0.448 0.468 0.560 0.995 0.838 0.986 0.803 0.014 0.524 0.525 OR combined 1.40 1.53 1.85 1.35 1.22 1.43 1.19 1.39 1.29 2.21 0.77 0.77 0.79 1.40 1.40 1.40 1.39 1.66 1.32 1.31 Combined¹ p-value combined 0.12 0.31 0.24 0.61 0.42 0.43 0.54 0.15 0.21 0.20 0.26 0.26 0.27 0.32 0.29 0.33 0.28 0.01 0.25 0.25 MCCA Effect ++ +++ ++++++ ++ ++ ---++ ++ +++ ++ ++ ++ p-value 0.24 0.40 0.47 0.36 0.43 0.43 0.49 0.25 - 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 rs10143684 rs10144348 rs10151422 rs1242937 rs1242938 rs1242940 rs1242941 rs1242942 rs1681581 rs1681582 rs1958322 rs1999070 rs1999071 rs28523687 rs34222671 rs34226211 rs34437928 rs35622014 rs35622551 rs56861039 rs8008677 rs10519031 rs112012489 rs115302036 rs116765599 rs12901887 T T C T T T C T G C G G C C C T A T G C G C C T T G 1.64 1.66 1.67 1.70 1.61 1.61 1.65 1.62 1.67 1.61 1.71 1.70 1.78 1.69 1.62 1.62 1.65 1.64 1.76 1.66 1.65 3.01 2.72 3.15 2.17 0.56 2.50E-06 1.39E-06 1.05E-06 1.53E-05 6.58E-05 6.58E-05 3.89E-06 5.70E-06 2.48E-05 7.89E-05 6.02E-07 1.53E-07 2.83E-08 7.24E-07 3.87E-06 4.18E-06 1.75E-06 2.82E-06 2.45E-07 1.47E-06 1.42E-06 6.68E-08 2.85E-06 3.09E-05 2.93E-05 6.22E-06 T T C T T T C T G C G G C C C T A T G C G C C T T G 1.042 1.032 1.036 1.069 1.067 1.065 1.049 1.038 1.066 1.065 1.104 1.066 1.059 1.072 1.036 1.036 1.036 1.035 1.098 1.035 1.036 0.834 0.838 1.069 1.267 0.980 0.453 0.560 0.516 0.332 0.334 0.353 0.413 0.522 0.357 0.353 0.101 0.266 0.318 0.228 0.516 0.518 0.520 0.534 0.123 0.533 0.517 0.527 0.539 0.849 0.287 0.739 1.31 1.31 1.32 1.35 1.32 1.32 1.32 1.30 1.34 1.32 1.38 1.35 1.36 1.35 1.30 1.30 1.31 1.31 1.40 1.31 1.31 1.61 1.57 1.94 1.74 0.75 0.23 0.25 0.24 0.19 0.18 0.18 0.22 0.24 0.19 0.18 0.14 0.20 0.23 0.19 0.24 0.24 0.24 0.24 0.16 0.25 0.24 0.46 0.45 0.22 0.04 0.30 ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++++ ++ -- 0.24 0.28 0.34 - 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 18 rs139751352 rs149023356 rs16941890 rs16942157 rs16942159 rs180995748 rs1968687 rs201996260 rs4775232 rs56036906 rs56856389 rs73419027 rs73419030 rs76270731 rs78573950 rs8029377 rs993192 rs76227669 A C C C C C G T A T G A G A C C T In bold: SNP replicated in GALA II study. 3.87 6.35 2.78 1.75 1.74 4.40 1.54 5.65 1.52 1.79 2.25 2.62 2.66 2.33 2.62 2.50 2.43 4.06 8.94E-05 3.78E-05 1.65E-06 5.25E-05 7.33E-05 5.59E-05 7.83E-06 6.37E-05 1.23E-05 4.05E-05 1.31E-05 1.44E-05 8.79E-06 6.85E-05 5.69E-06 2.45E-07 3.17E-05 3.88E-06 A C C C C C T T A T G A G A C C T 1.646 1.392 0.839 0.923 0.923 1.420 1.075 1.039 1.147 0.924 0.993 0.988 1.065 0.840 0.927 1.074 0.815 0.225 0.475 0.541 0.568 0.568 0.453 0.232 0.590 0.363 0.744 0.978 0.964 0.738 0.544 0.756 0.703 0.520 2.79 3.19 1.58 1.29 1.29 2.75 1.19 1.22 1.47 1.49 1.67 1.68 1.61 1.54 1.54 1.65 1.82 0.01 0.12 0.44 0.42 0.43 0.07 0.49 0.39 0.08 0.37 0.29 0.30 0.22 0.45 0.38 0.22 0.45 ++ ++ +++++ ++++ +++++ ++++ +- 0.29 0.30 0.30 - Figure S1: Analysis of the principal components in the SCAALA population with all of the SNPs in order to deduce population structure. Figure S2: Phenotypic variance explained for each chromosome. Variance 0.25 4 0.20 7 15 13 0.15 10 0.10 6 5 3 11 0.05 9 2 1 16 0.00 -1.00 18 21 221920 17 49.00 14 99.00 12 8 149.00 199.00 249.00 REFERENCE: 1. Torgerson DG, Ampleford EJ, Chiu GY, Gauderman WJ, Gignoux CR, Graves PE et al. Meta-analysis of genome-wide association studies of asthma in ethnically diverse North American populations. Nature genetics. 2011;43(9):887-92. doi:10.1038/ng.888 2. Hancock DB, Romieu I, Shi M, Sienra-Monge JJ, Wu H, Chiu GY et al. Genome-wide association study implicates chromosome 9q21.31 as a susceptibility locus for asthma in mexican children. PLoS genetics. 2009;5(8):e1000623. doi:10.1371/journal.pgen.1000623. 3. Delaneau O, Marchini J, Zagury JF. A linear complexity phasing method for thousands of genomes. Nature methods. 2012;9(2):179-81. doi:10.1038/nmeth.1785. 4. Nishimura KK, Galanter JM, Roth LA, Oh SS, Thakur N, Nguyen EA et al. Early-life air pollution and asthma risk in minority children. The GALA II and SAGE II studies. American journal of respiratory and critical care medicine. 2013;188(3):309-18. doi:10.1164/rccm.201302-0264OC. 5. Pino-Yanes M, Thakur N, Gignoux CR, Galanter JM, Roth LA, Eng C et al. Genetic ancestry influences asthma susceptibility and lung function among Latinos. The Journal of allergy and clinical immunology. 2015;135(1):228-35. doi:10.1016/j.jaci.2014.07.053.