Genetic Testing After Recurrent Pregnancy Loss

Genetic Testing After Recurrent Pregnancy Loss

Pregnancy is a journey of hope, love, and anticipation. But for some women and couples, that journey is marked by repeated heartbreak. Experiencing two or more miscarriages—known medically as recurrent pregnancy loss (RPL)—can be devastating, physically and emotionally.

At Second Spring Women’s Clinic, we understand how difficult recurrent miscarriage can be. Each loss carries not just physical discomfort but also deep emotional pain, confusion, and the growing fear that something may be wrong. One of the most important steps in understanding and preventing future loss is genetic testing—a powerful diagnostic tool that can uncover hidden causes and guide personalized treatment strategies.

In this article, we’ll explain the role of genetic testing after recurrent pregnancy loss, how it works, who needs it, and how our clinic supports you at every step of your reproductive journey.

What Is Recurrent Pregnancy Loss (RPL)?

Recurrent pregnancy loss is commonly defined as:

• Two or more consecutive pregnancy losses before 20 weeks gestation

• May include both clinically confirmed pregnancies and biochemical pregnancies (confirmed only by a positive hCG test)

It affects approximately 1–2% of couples, and the causes are often multifactorial, involving:

• Genetic/chromosomal issues

• Anatomical abnormalities

• Hormonal imbalances

• Immunological factors

• Blood clotting disorders

• Lifestyle or environmental factors

While no two cases are alike, genetic testing can provide key answers—especially when no obvious cause is found after basic testing.

Why Consider Genetic Testing?

One of the most common reasons for miscarriage, especially in the first trimester, is a chromosomal abnormality in the embryo. These abnormalities usually occur randomly and are not inherited. However, in recurrent loss, there is a higher chance that one or both partners carry a subtle genetic issue that increases the risk of repeated loss.

Genetic testing can help:

• Identify whether chromosomal abnormalities caused the miscarriage

• Reveal inherited or structural genetic conditions in either parent

• Inform decisions about future pregnancy and fertility planning

• Guide treatment (e.g., IVF with PGT, lifestyle modification, counseling)

At Second Spring Women’s Clinic, we use advanced genetic testing methods to provide couples with clarity, support, and tailored options.

Types of Genetic Testing After Recurrent Loss

Genetic evaluation typically involves both the parents and, when available, fetal tissue from a previous miscarriage. Here are the key tests we may recommend:

1. Parental Karyotype Testing

This is a blood test that analyzes the chromosomes of both partners to detect structural abnormalities.

What it looks for:

• Translocations (a piece of one chromosome is attached to another)

• Inversions (a piece of chromosome is flipped or rearranged)

• Deletions or duplications of genetic material

Most people with these rearrangements are healthy and unaware of them. However, they can pass unbalanced chromosomes to the embryo, leading to miscarriage.

Who benefits:

• Couples with two or more early miscarriages

• Couples with a family history of genetic conditions

2. Product of Conception (POC) Testing

If tissue from the miscarriage is available, we can analyze the fetal chromosomes to understand why the pregnancy failed.

What it looks for:

• Aneuploidies (too many or too few chromosomes)

• Triploidy or monosomy (complete loss of a chromosome)

• Mosaicism (mixed normal and abnormal cells)

Benefits:

• Provides closure by explaining what went wrong

• Helps determine if miscarriage was a random event or a sign of underlying issues

• Reduces unnecessary further testing if the cause is found

How it works:

• Tissue must be collected shortly after miscarriage (via D&C or naturally)

• Analysis is done via karyotyping or more advanced tools like microarray

3. Chromosomal Microarray Analysis (CMA)

This is a more sensitive technique than karyotyping, used to detect tiny genetic imbalances that standard tests might miss.

What it detects:

• Small deletions or duplications in fetal chromosomes (called copy number variants)

• Subtle abnormalities that may explain repeated loss or birth defects

CMA is especially useful when:

• Karyotype results are normal, but loss continues

• The couple is considering assisted reproductive technologies

4. Next-Generation Sequencing (NGS)

NGS can analyze large sections of DNA or entire genomes to identify gene-level mutations related to fertility, egg/sperm quality, or miscarriage risk.

Though not routinely needed, it may be recommended in complex cases or when other tests are inconclusive.

Additional Related Genetic Factors to Consider

While not strictly genetic, these biological factors may also affect miscarriage risk and may be included in a full diagnostic workup:

• Thrombophilia Testing (Blood Clotting Disorders)

Some women have inherited clotting disorders that can cause tiny clots in the placenta, leading to pregnancy loss.

Tests include:

• Factor V Leiden

• Prothrombin mutation

• Antithrombin, protein C and S deficiencies

• Antiphospholipid syndrome (APS)

Hormonal and Metabolic Tests

Not genetic, but often included in testing after recurrent miscarriage:

• Thyroid hormone levels (TSH, T4, TPO antibodies)

• Prolactin

• Blood sugar/insulin (especially in PCOS)

• Luteal phase progesterone

Our clinic evaluates these as part of a holistic assessment.

What Happens After Genetic Testing?

At Second Spring Women’s Clinic, your next steps are guided with care:

If a chromosomal issue is found:

• Genetic counseling is offered to explain your risk and options.

• In vitro fertilization (IVF) with preimplantation genetic testing (PGT) may be recommended to ensure only chromosomally normal embryos are transferred.

• In rare cases, egg or sperm donation may be discussed if risk is very high.

If no genetic cause is found:

• That is also valuable information.

• Focus may shift to other causes (immune, anatomical, hormonal, etc.)

• Emotional healing and supportive care remain essential.

Our goal is not only to diagnose, but to help you move forward with confidence, clarity, and compassionate care.

Emotional Considerations

Learning the results of genetic testing—whether normal or abnormal—can trigger a range of emotions:

• Relief at having answers

• Grief or fear if a genetic cause is confirmed

• Guilt, even though no one is at fault

• Anxiety about future pregnancies

At Second Spring, we recognize that miscarriage is not just a medical event—it is a deeply personal loss. That’s why we offer:

• One-on-one counseling

• Emotional support resources

• Guidance for when and how to try again

• Support for couples navigating difficult reproductive decisions

Timing of Testing

We usually recommend waiting until after the second or third miscarriage to begin a full RPL evaluation, unless there is:

• Advanced maternal age

• A history of genetic conditions

• Known medical problems (e.g., autoimmune disease)

• Strong emotional need to know

Early testing may be appropriate in certain cases, and our team always respects your pace and preferences.

Why Choose Second Spring Women’s Clinic?

Located in Gangnam, Seoul, Second Spring Women’s Clinic is led by Dr. Seon-Hwa Jeong, an expert in reproductive endocrinology and fertility preservation. We specialize in helping women navigate complex gynecological and reproductive challenges with:

• Advanced genetic testing services

• Minimally invasive diagnostic procedures

• State-of-the-art ultrasound and fertility support

• Integrated care for mind and body

• Multilingual support in Korean and English

We treat each patient as a whole person—not just a diagnosis—and walk with you every step of the way.

You Are Not Alone

If you have experienced multiple pregnancy losses, we want you to know:

You did not cause this.
There is hope.
You deserve answers, care, and support.

Recurrent pregnancy loss can be one of life’s most painful experiences, but with the right evaluation and guidance, many couples go on to have healthy pregnancies.