CCL7 and renal cell carcinoma: Three other cytokines presented suggestively significant causal associations with RCC in males, including MCP3 (Monocyte chemotactic protein‐3, OR = 1.211, 95% CI = 1.065–1.377, p value = 0.003 with IVW), PDGFbb (Platelet‐derived growth factor bb, OR = 8.720, 95% CI = 1.683–45.172, p value = 0.010 with Wald ratio), and RANTES (Regulated on activation, normal T cell expressed and secreted, OR = 0.535, 95% CI = 0.321–0.892, p value = 0.016 with Wald ratio) (Figure 2, Tables S1, S5).