Related Experiment Video
Updated: Aug 8, 2026

Mouse Oocyte In Vitro Maturation, Fertilization, and Culture of Preimplantation Embryos
Published on: May 29, 2026
Growth and development of children conceived by in-vitro maturation of human oocytes
Mu Shu-Chi1, Hwang Jiann-Loung, Lin Yu-Hung
1Institiute of Clinical Medicine, National Yang-Ming University, Medical College of Fu-Jen University, Taiwan.
Insights
Infants conceived via in-vitro maturation (IVM) programs show normal physical and mental development. This study found no developmental delays in IVM children compared to their non-IVM peers.
Area of Science:
- Reproductive Medicine
- Pediatric Development
- In-Vitro Maturation
Background:
- In-vitro maturation (IVM) is an assisted reproductive technology.
- Evaluating the long-term development of children born from IVM is crucial.
Purpose of the Study:
- To assess the physical and mental development of infants born from IVM programs.
- To compare developmental outcomes between IVM and non-IVM conceived children.
Main Methods:
- A cohort study comparing 21 IVM children with 21 non-IVM controls.
- Evaluations included physical examinations, neurological assessments, and Bayley Scales of Infant Development.
Main Results:
- No major malformations or karyotype abnormalities were found in either group.
- Mean Mental Development Index scores were comparable (92.71 for IVM vs. 97.19 for controls, p=0.074).
- Mean Psychomotor Development Index scores were also similar (96.67 for IVM vs. 96.19 for controls, p=0.817).
Conclusions:
- This is the first study to evaluate IVM children conceived with a combined FSH and hCG priming protocol.
- IVM children do not exhibit developmental delays in infancy and early childhood.
- IVM appears to be a safe method for assisted reproduction with normal developmental outcomes.
Aims:
The objective of this study is to evaluate the physical and mental development of infants born on in-vitro maturation (IVM) programs.
Study Design:
We compare 21 IVM children as study group and 21 non-IVM children as control group. We performed a general physical examination for malformations, neurological examination, developmental examination (Bayley Scales) on the IVM group and the non-IVM group.
Results:
We found all the children with normal karyotype and without major malformation in both IVM and non-IVM groups. The mean Mental Development Index scores for IVM subjects and the comparison group were 92.71+/-10.47 and 97.19+/-8.88, respectively (p=0.074). The mean Psychomotor Development Index scores were 96.67+/-8.91 and 96.19+/-7.05, respectively (p=0.817).
Conclusions:
This is the first study designed to evaluate the physical growth and developmental indices of IVM children with combinational priming protocol of FSH and hCG. Our results suggest that IVM children didn't show developmental delay during infancy and early childhood.
Related Concept Videos
In Vitro Fertilization
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
Oogenesis
Oogenesis
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is known...
Meiosis II
