Genetic Changes in Desmoid Tumors
Author Information
Author(s): Robanus-Maandag Els, Bosch Cathy, Amini-Nik Saeid, Knijnenburg Jeroen, Szuhai Karoly, Cervera Pascale, Poon Raymond, Eccles Diana, Radice Paolo, Giovannini Marco, Alman Benjamin A., Tejpar Sabine, Devilee Peter, Fodde Riccardo
Primary Institution: Leiden University Medical Center
Hypothesis
What are the genetic differences between familial adenomatous polyposis (FAP)-associated desmoids and sporadic desmoids?
Conclusion
FAP-associated desmoids show significantly more genetic changes compared to sporadic desmoids.
Supporting Evidence
- FAP-associated desmoids showed a higher frequency of copy number abnormalities (59%) compared to sporadic tumors (37%).
- Loss of the APC region at 5q22.2 was observed in 29% of FAP-associated desmoids but only 3% of sporadic tumors.
- The study found significant differences in the frequency of genomic alterations between FAP and sporadic desmoids.
Takeaway
Desmoid tumors can be more aggressive in people with a genetic condition called FAP, and they often have more genetic changes than those that occur randomly.
Methodology
The study analyzed 55 desmoid tumors using array comparative genomic hybridization and multiple ligation-dependent probe amplification.
Potential Biases
Potential bias in sample selection as tumors were collected from specific institutions.
Limitations
The study may not account for all genetic variations due to the limited sample size and focus on specific tumor types.
Participant Demographics
The study included 21 males and 33 females, with a mean age of diagnosis of 23.6 years for FAP patients and 32.7 years for non-FAP patients.
Statistical Information
P-Value
0.028
Confidence Interval
95% CI 1.23–39.56
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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