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Meet Dr. Melvin Thornton | Fertility Specialist in NYC | Global Fertility & Genetics

He delivered his first baby as a medical student—and it changed everything. That moment sparked Dr. Melvin Thornton’s lifelong commitment to helping everyone experience the joy of building a family. Known for listening first and personalizing every path to parenthood, he brings compassion, honesty, and heart to every patient journey at Global Fertility & Genetics.

👇 Meet Dr. Melvin Thornton of Global Fertility & Genetics—where listening comes first, and every path to parenthood is honored in our Q&A below.

“Everyone deserves the chance to experience the joy of building a family—no matter who they are or how they get there.”

What originally drew you to reproductive medicine, and what continues to inspire you in this work today?

I delivered my first baby while I was still a medical student, and that moment changed my life. The room was filled with joy and happiness, and I remember thinking how incredibly special it was to witness a baby coming into the world. Not long after, I realized that many couples aren’t able to experience that same joy because of fertility challenges.

As a young student, I told myself that everyone deserves the chance to feel what I felt in that delivery room. That belief still drives me today. No matter if someone is straight, gay, trans, or single—everyone should have the opportunity to experience the joy of having a child.

How would you describe your approach to patient care, especially during what can be an emotionally complex fertility journey?

One of the greatest gifts I’ve been given is the ability to truly listen. Many patients—whether their challenges are complex or relatively minor—simply want to be heard. Every fertility journey is unique, yet too often physicians rush straight to treatment without taking the time to understand the full story.

When you really listen to patients, they guide you toward what they actually need to be successful. I want to know more than just what’s happened over the past few months—I want to understand the whole journey. I’ll often ask couples how they met, which helps them reconnect with happier moments instead of focusing solely on the stress of trying to conceive.

One of my favorite questions is: “Five years from now, it’s a beautiful day and you’re at the park—how many children are with you?” It allows patients to dream again and remember that dreams really can come true.

With your extensive experience in the field, what do you believe makes truly excellent fertility care—beyond medical outcomes alone?

Excellent fertility care means supporting patients through the entire process and truly individualizing care from the very first consultation. Many fertility centers rely on a cookie-cutter approach, where everyone receives the same treatment plan or protocol. But that’s not how people—or bodies—work.

Not every patient needs IUI or IVF. Some may benefit from nutritional counseling, psychological support, or education about optimal timing based on their menstrual cycle. In other cases, alternative therapies like acupuncture can be helpful before pursuing medical treatment. The key is meeting patients where they are and giving them exactly what they need—not more, not less.

How do you work to build trust and reassurance with patients during moments of uncertainty or disappointment?

Trust is built through communication. In today’s world of portals and electronic messages, I still believe there’s nothing more powerful than a phone call—especially during moments of disappointment or doubt. A phone call goes a long way in reassuring patients, answering questions, and easing fears.

I’m old school in that way, and I also believe honesty is essential. Fertility can be a painful subject, and many patients don’t want to hear difficult information. But it’s important to be honest about chances of success—with and without treatment—while still being compassionate and encouraging. When honesty is delivered thoughtfully, it strengthens trust rather than diminishing hope.

What excites you most about the future of Global Fertility & Genetics and the care you’re building together for patients?

What excites me most is our team. The professionals at Global Fertility & Genetics are truly dedicated to our patients, and it always makes me smile when patients tell me how wonderful the staff is. Everyone here is top-notch, and that level of care and commitment allows us to provide the best possible experience and outcomes for the families we serve.

Just for Fun

Early mornings or late nights?
Both—my wife says I never stop working.

Coffee or tea?
Neither. Believe it or not, it’s Mountain Dew. It gives me the energy I need and tastes great.

City energy or countryside vibes?
Countryside, hands down. I love sitting outside and listening to the birds—it’s incredibly relaxing. Even though I’m not much of a coffee drinker, sitting outside in the morning with a cup of coffee and birds chirping feels like heaven.

Sweet or salty?
I’d say sweet—but according to my wife (who’s also my best friend), I can get a little salty when my favorite sports teams lose or after a particularly rough day on the golf course.

“Listening is one of the most important tools we have in fertility care.”

Physician. Listener. Advocate for every path to parenthood.

PGT-P in IVF: A New Advanced Genetic Screening Test

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What it is, how it works, and what intended parents should know.

Preimplantation Genetic Testing (PGT) has transformed the fertility landscape, giving intended parents more insight into their embryos’ genetic health than ever before. While most people are familiar with tests like PGT-A (which screens for chromosome abnormalities) or PGT-M (which looks for single-gene disorders), a newer and more advanced option—PGT-P—is generating a lot of questions.

Below, we break down what PGT-P is, how it works, and how it differs from other types of PGT.

PGT-P stands for Preimplantation Genetic Testing for Polygenic Risk. It is an advanced genetic screening test for embryos that analyzes an embryo’s polygenic risk score (PRS) for common adult-onset diseases like certain cancers and cardiovascular disease. It is a probabilistic test, meaning it estimates a risk level, and is different from older PGT types that focus on single gene mutations or chromosomal abnormalities. 

How PGT-P Works

  • Calculates a risk score: A PRS is calculated for the embryo for various conditions based on its genetic makeup.
  • Uses a large genetic dataset: The analysis looks at many genetic variants and compares them to large populations to estimate the risk.
  • Provides probabilistic results: The score is not a guarantee of getting or avoiding a disease, but rather an estimate of the embryo’s risk compared to the general population.
  • Supplements other PGT tests: PGT-P can be used with other PGT tests, like PGT-A (aneuploidy) and PGT-M (monogenic disorders), to provide more comprehensive information about the embryo. 

Key Differences from other PGT

  • Focus: PGT-P focuses on polygenic conditions (influenced by many genes and environmental factors), whereas PGT-M focuses on single-gene disorders.
  • Result type: PGT-P provides a probabilistic risk score, while PGT-M can definitively identify if an embryo is impacted, unaffected, or a carrier for a specific disease.
  • Complexity: It is a more complex test because it considers a broader spectrum of disease risk rather than a single, simple genetic issue. 

Considerations and Limitations

  • Environmental factors: PGT-P does not account for non-genetic factors like lifestyle, which can significantly influence the actual risk of developing a disease.
  • Ethical questions: It raises ethical considerations regarding embryo selection, the potential for “designer babies,” and equal access to the technology.
  • Regulatory status: The technology is still developing, and regulatory guidelines and scientific evidence are still evolving in many places. For example, it is currently not permitted in the UK. 

It’s important to remember: polygenic risk is just one piece of the puzzle. Environmental factors, lifestyle, and family history also play major roles.

Who Might Consider PGT-P?

PGT-P may be helpful for:

  • Intended parents undergoing IVF who want additional genetic insight
  • Individuals or couples with strong family histories of common diseases
  • Patients already doing PGT-A or PGT-M who want a more comprehensive picture

It is always recommended to discuss PGT-P with a genetic counselor, who can explain how the test applies to your medical history and family-building goals.

Is PGT-P Right for You?

PGT-P is not necessary for everyone, but it can offer added clarity for families seeking to reduce the risk of certain adult-onset conditions. As with all genetic testing, it’s important to weigh the benefits, limitations, and ethical considerations.

At Global Fertility & Genetics, we provide personalized guidance to help intended parents make informed decisions. Our team is here to walk you through every step—from IVF to genetic counseling to understanding your results.If you’re considering PGT-P or want to learn more about your options, contact our team today.