Is Rothmund-Thomson Syndrome hereditary?

Rothmund-Thomson syndrome (RTS) is a hereditary genetic condition inherited in an autosomal recessive pattern, meaning an individual must inherit two pathogenic variants—one from each parent—to manifest the disorder. While it is primarily inherited, the specific genetic defect involves mutations in the RECQL4 gene in approximately 60-65% of clinically diagnosed cases.

Is Rothmund-Thomson syndrome strictly hereditary?

Rothmund-Thomson syndrome is considered a genetic condition. Because it follows an autosomal recessive inheritance pattern, parents of an affected child are typically asymptomatic carriers, each carrying one copy of the mutated gene. While it is hereditary, it is important to note that Rothmund-Thomson syndrome is not usually passed directly from an affected parent to a child, as individuals with the condition often have health complexities that impact reproductive planning. De novo (spontaneous) mutations are rare in the context of the germline, as the condition is almost exclusively inherited from carrier parents.

What are the inheritance risks and genetic testing options?

When both parents are carriers of a pathogenic variant associated with Rothmund-Thomson syndrome, the following risks apply to each pregnancy:

• 25% chance the child will be affected by Rothmund-Thomson syndrome.


• 50% chance the child will be an asymptomatic carrier.


• 25% chance the child will neither be affected nor a carrier.

Genetic testing is available via molecular analysis of the RECQL4 gene. Testing is highly recommended to confirm a clinical diagnosis of Rothmund-Thomson syndrome, especially when dermatological signs like poikiloderma appear in infancy.

What is the role of genetic counseling for families?

Genetic counseling is essential for families navigating Rothmund-Thomson syndrome. Counselors provide clarity on recurrence risks and explain reproductive options, such as preimplantation genetic testing (PGT) for those undergoing IVF. For the two community members currently on DiseaseMaps.org living with Rothmund-Thomson syndrome, genetic counseling serves as a bridge between understanding the biological cause and managing long-term surveillance for cancer risks associated with the condition.

Next steps

• Consult with a clinical geneticist to undergo RECQL4 mutation analysis.


• Request a referral to a genetic counselor to discuss family planning and carrier testing.


• Connect with others on DiseaseMaps.org to share experiences regarding living with Rothmund-Thomson syndrome.


• Establish a long-term monitoring plan with an oncologist, as Rothmund-Thomson syndrome is associated with an increased risk of osteosarcoma and skin cancers.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment; always seek the advice of your physician regarding a medical condition.

References

• NIH Genetic and Rare Diseases Information Center (GARD) - Rothmund-Thomson Syndrome


• Orphanet: Rothmund-Thomson Syndrome (ORPHA:790)


• Online Mendelian Inheritance in Man (OMIM) - #268400: Rothmund-Thomson Syndrome


• GeneReviews: RECQL4-Related Disorders