Which are the causes of Adenoid Cystic Carcinoma?

The exact cause of Adenoid Cystic Carcinoma (ACC) remains unknown, as it is considered a sporadic cancer rather than an inherited condition. Research indicates that Adenoid Cystic Carcinoma is primarily driven by specific chromosomal rearrangements, most notably the fusion of the MYB and NFIB genes, which act as a "genetic switch" that triggers tumor growth.

What causes Adenoid Cystic Carcinoma?

At present, the medical community does not identify a single external cause for Adenoid Cystic Carcinoma. Unlike some cancers linked to lifestyle choices or environmental pollutants, Adenoid Cystic Carcinoma appears to develop due to random mutations that occur in cells during a person's lifetime. These are known as somatic mutations, meaning they are not passed down from parents to children.

What is the role of genetics in Adenoid Cystic Carcinoma?

The hallmark of Adenoid Cystic Carcinoma is a specific chromosomal translocation, usually written as t(6;9)(q22-23;p23-24). This structural change brings together parts of two different genes, creating a fusion gene that forces cells to grow uncontrollably. While this genetic abnormality is present in the vast majority of cases, it is not considered an inherited "disease gene" that runs in families.

Are there known risk factors for Adenoid Cystic Carcinoma?

While the cause is the underlying mechanism of disease, risk factors are elements that may increase the probability of developing the condition. Currently, very few risk factors have been confirmed for Adenoid Cystic Carcinoma. Key observations include:

• Age: Most cases of Adenoid Cystic Carcinoma are diagnosed in adults between the ages of 40 and 60.


• Gender: Data suggests a slightly higher prevalence in women compared to men.


• Location: The disease most commonly originates in the salivary glands, but can occur in the breast, skin, and lacrimal glands.

What is the focus of current research?

Researchers at institutions worldwide are investigating why these specific genetic translocations occur. Current studies are focused on targeted therapies that attempt to "turn off" the MYB protein produced by the MYB-NFIB fusion, offering hope for more precise treatments for those living with Adenoid Cystic Carcinoma.

Next steps

• Consult with an oncologist specializing in head and neck cancers or rare salivary gland tumors.


• Connect with the 119 members of the DiseaseMaps.org community to share experiences and coping strategies.


• Inquire about clinical trials through the Adenoid Cystic Carcinoma Research Foundation (ACCRF).

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

References

• NIH Genetic and Rare Diseases Information Center (GARD): Adenoid Cystic Carcinoma


• Orphanet: Rare Disease Database (ORPHA:138)


• OMIM (Online Mendelian Inheritance in Man): Entry #104120


• Adenoid Cystic Carcinoma Research Foundation (ACCRF)