Optimal timing for frozen-thawed embryo transfer: evidence from a systematic review and meta-analysis
-
By
-
Guangzhong Jiao
-
Huayu Lian
-
Xiaoyan Liu
-
Xunlan Yin
-
July 15, 2026
Clinical Scorecard: Timing Considerations for Frozen-Thawed Embryo Transfer: Insights from a Systematic Review and Meta-Analysis
At a Glance
| Category | Detail |
|---|
| Condition | Frozen-Thawed Embryo Transfer |
| Key Mechanisms | Association between cryopreservation duration and reproductive/neonatal outcomes. |
| Target Population | Patients undergoing assisted reproductive technology (ART) with cryopreserved embryos. |
| Care Setting | Assisted reproductive technology clinics. |
Key Highlights
- Shorter storage (≤12 months) linked to higher live birth rates (OR 1.19).
- Biochemical pregnancy rates improved with shorter storage (OR 1.44).
- Clinical pregnancy rates also higher with ≤12 months storage (OR 1.24).
- Multiple pregnancy rates increased with shorter storage but confounded by embryo number.
- Maternal age significantly affects live birth and clinical pregnancy rates.
Guideline-Based Recommendations
Diagnosis
- Evaluate reproductive outcomes based on cryopreservation duration.
Management
- Consider individualized clinical decisions regarding embryo transfer timing.
Monitoring & Follow-up
- Monitor pregnancy outcomes and adjust protocols based on patient readiness and embryo quality.
Risks
- Be aware of high heterogeneity and confounding factors in studies.
Patient & Prescribing Data
Individuals undergoing IVF/ICSI with cryopreserved embryos.
Shorter cryopreservation duration may enhance reproductive outcomes.
Clinical Best Practices
- Utilize individualized approaches for embryo transfer timing.
- Account for maternal age and embryo quality in decision-making.
Related Resources & Content
