For couples struggling with infertility, the journey towards parenthood can be overwhelming. Thankfully, advancements in assisted reproductive technologies (ART) offer various solutions, each with its unique approach. One such technique is the Gamete Intrafallopian Transfer (GIFT).
It is a technique used to aid in pregnancy by extracting both the female egg and sperm and combining them within the fallopian tube. Unlike in vitro fertilization (IVF) and intrafallopian tube transplantation, the fertilization process in GIFT occurs within the fallopian tube instead of a laboratory dish. However, it is crucial to have a healthy fallopian tube for successful gamete transplantation.
Today, we'll delve into Gamete Intrafallopian Transfer, a less commonly known yet potentially effective option.
What is Gamete Intrafallopian Transfer?
The initial GIFT procedure follows the same steps as in vitro fertilization (IVF). It involves the administration of injectable hormones to stimulate superovulation, followed by additional injections to mature the developing eggs. The medical facility where the procedure will take place will provide specific instructions to prepare you for the process.
After the eggs and sperm are collected, the techniques used in GIFT and IVF diverge. In IVF, the embryo is inserted into the uterus through a catheter inserted into the vagina in a simple and quick procedure that takes place 3-5 days after fertilization.
On the other hand, GIFT requires an incision in the abdomen, and the eggs and sperm are directly placed into the fallopian tubes using a laparoscope, which is a small telescope-like instrument. A laparoscopy necessitates general anaesthesia, although it is typically performed as an outpatient procedure. If everything goes as planned, once the eggs are in the fallopian tubes, at least one of them will be fertilized by the sperm and proceed to the uterus to mature.
However, since the eggs and sperm are placed in the fallopian tubes before fertilization, it is impossible to determine if fertilization has occurred. To increase the chances of pregnancy, GIFT usually involves the use of more eggs, which also raises the risk of multiple births. The American Society of Reproductive Medicine advises that GIFT should only be performed in a facility that is equipped to carry out IVF as an alternative or in conjunction with GIFT.
Unlike In Vitro Fertilization (IVF), where fertilization occurs in a lab dish, GIFT takes a more natural approach. Here's a breakdown of the process:
- Egg retrieval: Through a minor surgical procedure, one or more eggs are retrieved from the woman's ovaries.
- Sperm preparation: The male partner provides a semen sample, which is processed to isolate healthy sperm.
- Mixing the gametes: Eggs and sperm are carefully combined in a catheter.
- Transfer to the fallopian tubes: Using laparoscopy, the egg-sperm mixture is placed directly into one or both.
- Fertilization and implantation: Ideally, fertilization occurs naturally within the fallopian tubes, and the resulting embryo implants in the uterine lining.
Who might benefit from GIFT?
GIFT can be a suitable option for couples with:
- Mild male factor infertility (reduced sperm count or motility)
- Unexplained infertility
- Blocked fallopian tubes on one side (with the other tube being healthy)
- Ethical or religious objections to traditional IVF, where fertilization occurs outside the body
Advantages of GIFT
Because fertilization occurs internally within the woman's body rather than in a laboratory dish, the success rate of GIFT is comparatively high. Specialists believe the passage through the fallopian tube nourishes the developing embryo, enhancing its chances of being healthy and successfully implanting in the uterus. Another factor contributing to the improved success rate could be the timing aspect. Unlike in IVF, where the embryo is placed in the uterus by the doctor, GIFT allows the embryo to arrive at the optimal time for implantation, aligning with the woman's natural reproductive cycle.
- More natural fertilization: Allows fertilization to occur in the fallopian tubes, mimicking the natural process.
- Reduced risk of multiple pregnancies: Compared to conventional IVF, where multiple embryos are transferred, GIFT typically involves fewer eggs, lowering the chance of twins or higher-order multiples.
- Potentially lower cost: GIFT can be a more cost-effective option compared to some advanced ART procedures.
How Does GIFT Differ From IVF?
IVF proves advantageous for individuals facing evident fertility problems. The underlying causes may encompass obstructed fallopian tubes, medical ailments, or male factor infertility. The allure of IVF lies in its accessibility, precision, and diverse treatment options. Moreover, IVF extends its benefits to older individuals, single individuals, and same-sex couples. While IVF may offer a more cost-effective solution per cycle compared to GIFT, the cumulative expenses can escalate due to the possibility of multiple attempts, resulting in a significant financial and emotional strain.
GIFT aims to introduce both eggs and sperm into the fallopian tubes of a woman, with the expectation of natural fertilization occurring at this stage. The resulting embryo can then independently travel to the uterus for implantation. To initiate the procedure, the fertility clinic retrieves multiple eggs from the ovaries, which are subsequently combined with the sperm sample and washed. A doctor then utilizes a laparoscopic procedure to implant the prepared gametes into the fallopian tube. Although IVF has become more prevalent, GIFT is still offered in numerous clinics, albeit infrequently.
Things to consider
Both GIFT and IVF are effective assisted reproductive technology (ART) options that can help in achieving pregnancy. However, various factors play a role in determining the most suitable procedure. GIFT is particularly beneficial for couples with healthy fallopian tubes and sperm but unexplained infertility. Considering this, GIFT generally boasts a higher success rate compared to IVF. Nevertheless, the main hurdle lies in the scarcity of clinics offering GIFT. Additionally, the cost of the GIFT procedure per cycle is higher than that of IVF. Despite these considerations, GIFT remains a viable choice for patients with specific religious or ethical beliefs.
Here are a few things that one should consider before taking up the Gamete Intrafallopian Transfer:
- Success rates: GIFT generally has lower success rates compared to IVF, especially for women with specific fertility issues.
- Not widely available: Due to its lower success rates and technical complexity, all fertility clinics do not offer GIFT.
- Importance of healthy fallopian tubes: At least one healthy fallopian tube is crucial for successful GIFT.
Conclusion
GIFT is just one piece of the fertility puzzle. Consulting with a qualified healthcare professional is essential to understand its suitability for your circumstances and explore all available options for achieving your dream of parenthood.
