How is Cloves Syndrome diagnosed?

CLOVES syndrome is primarily diagnosed through clinical examination by a specialist and confirmed via molecular genetic testing that identifies a somatic (non-hereditary) activating mutation in the PIK3CA gene. Because CLOVES syndrome is a spectrum disorder with highly variable presentations, diagnosis often requires a multidisciplinary team to evaluate the characteristic pattern of vascular malformations, overgrowth, and spinal anomalies.

How is CLOVES syndrome diagnosed?

The diagnostic process for CLOVES syndrome begins with a physical assessment of the classic features: Congenital Lipomatous Overgrowth, Vascular malformations, Epidermal nevi, and Spinal/Skeletal anomalies. Because these symptoms can mimic other conditions, physicians rely on targeted genetic testing of affected tissue (biopsy) rather than standard blood samples, as the PIK3CA mutation is often mosaic, meaning it is not present in every cell of the body.

What tests are used to identify CLOVES syndrome?

Clinical specialists utilize several diagnostic modalities to confirm a case of CLOVES syndrome:

• Genetic Testing: Targeted deep sequencing of affected tissue samples to detect somatic PIK3CA mutations.


• Advanced Imaging: MRI scans are essential to map the extent of vascular malformations and assess spinal alignment.


• Clinical Evaluation: Assessment by genetics, dermatology, and orthopedics to verify the diagnostic criteria.


• Biopsy: Analysis of tissue from overgrowth areas to confirm the genetic driver.

Why is the diagnostic journey so challenging?

Many patients with CLOVES syndrome experience a "diagnostic odyssey," often waiting years for an accurate diagnosis due to the rarity of the condition and its overlap with other PIK3CA-Related Overgrowth Spectrum (PROS) disorders. It is common for CLOVES syndrome to be initially misdiagnosed as Klippel-Trénaunay syndrome or other vascular anomalies. We hear the frustration of our 7 community members at DiseaseMaps.org who have navigated this path; please know that your search for answers is valid and your persistence is vital.

Why is specialist care critical?

Because CLOVES syndrome involves complex multi-system involvement, it is essential to consult with specialists—such as pediatric geneticists or vascular anomaly experts—who are familiar with the PIK3CA spectrum. General practitioners may not recognize the subtle clinical markers, making specialized referral the most effective way to end the diagnostic uncertainty.

Next steps

• Consult a center of excellence specializing in vascular anomalies or genetic overgrowth syndromes.


• Request a referral to a clinical geneticist for targeted PIK3CA testing.


• Connect with the 7 members of our CLOVES syndrome community at DiseaseMaps.org to share experiences and provider recommendations.

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

References

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


• Orphanet: CLOVES syndrome


• OMIM (Online Mendelian Inheritance in Man): PIK3CA-Related Overgrowth Spectrum


• The CLOVES Syndrome Community (patient advocacy foundation)