AAP: Trisomy 13 and 18 Not Always Lethal

New Guidance from the American Academy of Pediatrics

The American Academy of Pediatrics (AAP) has issued new guidance that challenges long-standing assumptions about the genetic disorders Trisomy 13 and Trisomy 18. According to the organization, these conditions are not uniformly lethal, and the practice of promoting abortion or focusing solely on postnatal comfort care for all children with these diagnoses is outdated.

Published on July 21, the guidance highlights a growing trend in medical and surgical interventions for infants and children with Trisomy 13 and 18. These conditions, classified as chromosomal syndromes, are associated with a range of congenital anomalies and severe neurodevelopmental impairments. However, the AAP emphasizes that recent studies show improved outcomes when appropriate interventions, such as cardiac surgery, are performed.

Trisomy 18, also known as Edwards syndrome, occurs when a person has three copies of chromosome 18 instead of two. It is often linked to seizures, congenital heart disease, and other complications. Similarly, Trisomy 13, or Patau syndrome, involves an extra copy of chromosome 13 and can lead to seizures, cleft lip, and palate issues.

The guidance states that while these conditions significantly impact prognosis, there is no ethical justification for universal, principle-based differential treatment based solely on these genetic diagnoses. Medical and surgical decisions should be based on the best available evidence, tailored to the individual's clinical context, and applied consistently across institutions.

Although the AAP acknowledges a more positive outlook for some children with Trisomy 13 and 18, survival rates remain low. Approximately 12.3% of children with Trisomy 18 survive beyond their fifth birthday, and 9.7% of those with Trisomy 13 do the same. However, the report suggests that the previous focus on pregnancy termination and postnatal comfort care is no longer appropriate.

Prenatal counseling for expectant parents previously centered on options for pregnancy termination or postnatal comfort care, assuming all affected infants would die. The new guidance notes that this perspective is outdated, as contemporary outcomes show that death in the neonatal period is not universal for infants who receive intensive medical and surgical care.

While "exclusive comfort care" is considered a morally acceptable choice for some parents, the AAP clarifies that this diagnosis alone does not justify withholding therapies that could prolong life or facilitate hospital discharge.

The debate over abortion rights has also influenced discussions around these conditions. Following the 2022 U.S. Supreme Court decision in Dobbs v. Jackson Women's Health, which led to several states implementing near-total abortion bans, pro-abortion activists have argued that parents should have the right to terminate pregnancies involving Trisomy 13 or 18.

In late 2023, a Texas woman named Kate Cox became a national figure after she sought an abortion for her unborn child diagnosed with Trisomy 18. At 20 weeks pregnant, Cox faced legal challenges under Texas law, which allows exceptions only in cases where the mother's health is at risk. A lower court initially ruled in her favor, but the Texas Supreme Court reversed the decision, prompting Cox to seek an abortion out of state.

Then-President Joe Biden, a vocal opponent of abortion restrictions, invited Cox to his 2024 State of the Union address to highlight what he viewed as the negative consequences of restrictive state laws.

Before the AAP's new guidance was released, parents of children with Trisomy 13 and 18 shared stories of their children leading fulfilling lives. In an op-ed published in The Christian Post last year, Jennifer Thenhaus described how her daughter, Melody, was initially deemed "incompatible with life" after being diagnosed with Trisomy 18. Despite significant health challenges, including heart defects and severe apnea, Melody's condition improved over time. By the time the op-ed was published in October 2024, she was 11 years old with no major health issues other than scoliosis. Thenhaus emphasized that Melody is thriving.

These stories underscore the importance of reevaluating traditional approaches to Trisomy 13 and 18, emphasizing the need for individualized care, informed decision-making, and ongoing support for families.