Recurrent implantation failure: a committee opinion
Fertility and Sterility
|July 31, 2026
Summary
Recurrent implantation failure, defined as multiple failed embryo transfers, may indicate underlying conditions affecting pregnancy. This review outlines diagnostic criteria and evidence-based evaluations for affected patients.
Area of Science:
- Reproductive Medicine
- Infertility Research
- Embryology
Background:
- Multiple failed embryo transfers suggest potential implantation issues.
- Recurrent implantation failure (RIF) affects a subset of patients undergoing assisted reproductive technologies.
- Identifying causes of RIF is crucial for improving pregnancy success rates.
Purpose of the Study:
- To review diagnostic criteria for recurrent implantation failure.
- To provide an evidence-based evaluation for patients experiencing RIF.
- To identify potential conditions affecting embryo implantation.
Main Methods:
- Literature review of diagnostic criteria for RIF.
- Evidence-based evaluation of diagnostic and therapeutic options.
- Analysis of studies focusing on implantation mechanisms.
Main Results:
- Diagnostic criteria for RIF are established.
- Various factors can contribute to implantation failure.
- Evidence supports specific evaluations for RIF patients.
Conclusions:
- Patients with recurrent implantation failure require thorough investigation.
- An evidence-based approach can guide the evaluation and management of RIF.
- Understanding implantation factors is key to successful treatment.

