KDR and endometriosis: Taken together, these experiments indicated that anti-VEGF/VEGFR agents were associated with significant inhibition of the growth of endometriosis lesions (SMD –0.96, 95% CI –1.31 to –0.62; P < 0.0001; Fig 2A) with a low heterogeneity in the estimates (I2 = 27.4%, 95% CI 0% to 64%; H2 = 0.38).