Advanced Mitochondrial Replacement Therapy in IVF
Maternal Spindle Transfer (MST), also known as mitochondrial replacement therapy, is one of the most advanced techniques in modern reproductive medicine.
It was originally developed to prevent the transmission of mitochondrial DNA disease, and today it is carefully evaluated in selected complex fertility cases involving mitochondrial dysfunction.
At our IVF centre, we approach mitochondrial-based treatment strategies with scientific precision, ethical responsibility, and highly individualised patient assessment.
Why Mitochondria Matter in Fertility
Mitochondria are the energy-producing structures inside every cell.
In the oocyte (egg cell), they play a critical role in:
• Chromosome segregation
• Meiotic spindle integrity
• Fertilisation
• Early embryo development
• Blastocyst formation
Scientific research has demonstrated that mitochondrial efficiency declines naturally with maternal age. This decline may contribute to:
• Reduced egg quality
• Increased risk of aneuploid embryos
• Recurrent IVF failure
• Poor blastocyst development
Understanding mitochondrial biology has therefore become an important part of advanced reproductive medicine.
What Is Maternal Spindle Transfer?
Maternal Spindle Transfer is performed before fertilisation during an IVF cycle.
The procedure involves:
1. Removing the nuclear genetic material from the intended mother’s egg.
2. Transferring it into a donor egg containing healthy mitochondria (after removal of the donor’s nuclear DNA).
3. Fertilising the reconstructed egg with sperm.
The resulting embryo contains:
• The mother’s nuclear DNA
• The father’s DNA
• Healthy donor mitochondrial DNA
More than 99% of the child’s genetic identity derives from the biological parents.
Landmark publications in Nature (Tachibana et al., 2009; Craven et al., 2010) established the scientific foundation of mitochondrial replacement therapy. In the United Kingdom, mitochondrial donation is regulated by the Human Fertilisation and Embryology Authority (HFEA).
Primary Indication: Prevention of Mitochondrial Disease
Maternal Spindle Transfer was developed for women who carry pathogenic mitochondrial DNA mutations.
It may be considered in cases such as:
• Confirmed mitochondrial DNA disease carriers
• Previous children affected by mitochondrial disorders
• Strong genetically confirmed family history
In these situations, MST offers the possibility of preventing disease transmission while preserving nuclear genetic parenthood.
Advanced Maternal Age and Mitochondrial Function
As women age, mitochondrial function within the egg naturally declines. This biological process may contribute to:
• Reduced oocyte competence
• Higher chromosomal error rates
• Embryo developmental arrest
It is important to emphasise that Maternal Spindle Transfer is not a routine fertility enhancement procedure for age-related infertility.
However, in selected and carefully evaluated cases — particularly where severe oocyte-related developmental failure is observed — advanced mitochondrial strategies may be discussed within a structured and ethical framework.
Each case requires:
• Comprehensive fertility assessment
• Detailed embryological review
• Genetic counselling
• Regulatory evaluation
Our role is to provide clarity, not unrealistic expectations.
Safety, Regulation and Ethical Oversight
Mitochondrial replacement therapy is a highly specialised laboratory procedure requiring:
• Advanced embryology expertise
• Strict laboratory standards
• Multidisciplinary clinical evaluation
Long-term follow-up data continue to be collected internationally.
Regulatory approval varies by country and must always be respected.
For UK and European patients, cross-border reproductive treatment must be approached transparently and responsibly.
Our Clinical Approach
At our centre, we integrate advanced mitochondrial science into a broader evidence-based fertility strategy.
We believe in:
• Individualised ovarian stimulation protocols
• Blastocyst culture and embryo optimisation
• Careful genetic evaluation when indicated
• Transparent discussion of risks and benefits
Maternal Spindle Transfer is available at our clinic for carefully selected cases following detailed eligibility review and medical assessment.
If you are affected by mitochondrial disease or experiencing complex age-related fertility challenges, we invite you to arrange a confidential consultation to explore whether mitochondrial-based IVF strategies may be appropriate for you.
Selected Scientific References
• Tachibana et al., Nature, 2009
• Craven et al., Nature, 2010
• Human Fertilisation and Embryology Authority (HFEA) Mitochondrial Donation Regulations