The authors conclude that, “since the original Science Panel findings, our view is that the evidence of an association of PFOA and thyroid disease has gotten weaker” and that “while a number of studies have suggested associations between thyroid hormones and PFOA in cross-sectional analyses, in our view there is little consistency across studies so evidence for a causal impact on thyroid hormones remains weak.” The gene discussed is TG; the disease is thyroid gland disorder.