The results associated with significant GWAS variants (P<5E‐8) showed the following haplotype associations in European population: GT rs4808075‐rs8170 haplotype on BABAM1 with breast and ovarian cancers, GC rs16857609‐rs11693806 haplotype on DIRC3 with breast and thyroid cancers, GCG rs380286‐rs401681‐rs31487 haplotype on CLPTM1L with skin and lung cancers, GGG rs4430796‐rs11651052‐rs11263763 haplotype on HNF1B with prostate and endometrial cancers, and GT rs10505477‐rs6983267 haplotype on CASC8 associated with colorectal and prostate cancers. This evidence concerns the gene CASC8 and thyroid cancer.