
Loading, please wait...

Loading, please wait...

A major randomized trial comparing fresh versus frozen-thawed embryo transfer strategies in women at high risk of ovarian hyperstimulation syndrome showed that a freeze-all strategy substantially reduced the risk of moderate or severe OHSS. Subsequent studies have also demonstrated favorable pregnancy outcomes with frozen transfer in selected populations. The practical lesson is that delaying transfer can sometimes improve safety without sacrificing reproductive potential. For fertility specialists, the strategy is especially relevant for patients with high ovarian response, polycystic ovary syndrome or markedly elevated estradiol during stimulation. However, freeze-all is not automatically superior for every IVF patient, and cost, laboratory capability and patient preference matter. The approach also requires reliable vitrification and warming performance. The evidence supports individualized embryo-transfer timing as part of modern ovarian stimulation and ART planning.

Read summarized clinical updates, watch expert medical content, and earn CME certifications right from your smartphone.


A major randomized trial comparing fresh versus frozen-thawed embryo transfer strategies in women at high risk of ovarian hyperstimulation syndrome showed that a freeze-all strategy substantially reduced the risk of moderate or severe OHSS. Subsequent studies have also demonstrated favorable pregnancy outcomes with frozen transfer in selected populations. The practical lesson is that delaying transfer can sometimes improve safety without sacrificing reproductive potential. For fertility specialists, the strategy is especially relevant for patients with high ovarian response, polycystic ovary syndrome or markedly elevated estradiol during stimulation. However, freeze-all is not automatically superior for every IVF patient, and cost, laboratory capability and patient preference matter. The approach also requires reliable vitrification and warming performance. The evidence supports individualized embryo-transfer timing as part of modern ovarian stimulation and ART planning.
3 weeks back

Discover how catalytic nanozymes redefine autoimmune disease therapy by establishing a physiological redox set-point to restore immune tolerance without broad immunosuppression.
Last week

Recent research reveals that downregulating YAP1/TAZ-TEAD via Hippo signaling triggers spontaneous human trophoblast syncytialization in 3D cultures, illuminating placental biology and preeclampsia.
3 weeks back

A landmark comparative study evaluates atrial electrophysiology across humans, swine, and rodents. By linking cellular recordings with transcriptomics and in silico modeling, researchers resolve cross-species gaps, explaining translational failures to advance targeted therapies for atrial arrhythmias.
3 weeks back

A novel pathology-adaptive surface engineering strategy uses functionalized plasma polymer coatings to selectively modulate AGE adsorption, reducing oxidative stress and restoring bone formation in diabetic and aging microenvironments.
last month

Researchers have developed an innovative ultrasound-responsive nano-contrast agent that co-delivers CIITA-siRNA and rapamycin directly to inflamed thyroid tissue, significantly reducing autoimmune injury and thyroid autoantibodies in preclinical models of Hashimoto thyroiditis.
3 weeks back