What is the prevalence of Cardiofaciocutaneous / Cfc Syndrome?

Cardiofaciocutaneous (CFC) syndrome is a rare genetic disorder with an estimated prevalence of approximately 1 in 810,000 individuals, though exact figures remain challenging to verify due to historical underdiagnosis. It is classified as an ultra-rare condition, with clinical features typically manifesting at birth or in early infancy.

How common is Cardiofaciocutaneous (CFC) syndrome?

Cardiofaciocutaneous (CFC) syndrome is considered an ultra-rare condition. Because many cases were historically misdiagnosed as Noonan syndrome or Costello syndrome prior to the identification of the causative genes (BRAF, MAP2K1, MAP2K2, and KRAS), the true global prevalence remains difficult to determine. While the estimate of 1 in 810,000 is often cited in medical literature, the actual number of individuals living with Cardiofaciocutaneous (CFC) syndrome may be higher due to increased utilization of genomic sequencing.

Are there demographic or gender differences in CFC syndrome?

Current clinical data indicates that Cardiofaciocutaneous (CFC) syndrome affects males and females with equal frequency. There is no evidence suggesting that the condition is more prevalent in specific ethnic or geographic populations. The disorder is almost always the result of a de novo (sporadic) mutation, meaning it is not typically inherited from parents, though it is a lifelong condition that begins in the prenatal or neonatal period.

What challenges exist in tracking Cardiofaciocutaneous (CFC) syndrome?

Accurate epidemiological data for Cardiofaciocutaneous (CFC) syndrome faces several hurdles:

• Diagnostic Overlap: The phenotypic similarity to other RASopathies often leads to misdiagnosis.


• Limited Registry Data: Rare disease registries are still maturing globally.


• Real-world Community Input: At DiseaseMaps.org, 36 people with Cardiofaciocutaneous (CFC) syndrome have joined our community, providing vital, anecdotal insights that complement formal clinical studies.

Next steps

• Consult a clinical geneticist to confirm a diagnosis through molecular testing.


• Join the DiseaseMaps.org community to connect with other families navigating Cardiofaciocutaneous (CFC) syndrome.


• Review resources from the CFC International foundation for the latest management guidelines.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment.

References

• Orphanet: Cardiofaciocutaneous syndrome (ORPHA:1395)


• NIH Genetic and Rare Diseases Information Center (GARD): CFC syndrome


• OMIM (Online Mendelian Inheritance in Man): #115150


• CFC International: Patient Advocacy and Research Support