A pair of new studies suggests your family history may put you at risk of developing skin cancer.

According to Reuters, a recent Australian study found that having an identical twin with melanoma increases risk for the disease nearly 10-fold. Individuals with non-identical twins with the cancer were twice as likely to get it.

Researchers say the increased risk has to do with genes and, particularly, the interactions between genes.

Another study out of the University of California Los Angeles found that people with a sibling or parent diagnosed with some types of skin cancer were more likely to develop skin cancers of various types, not just the ones their relatives had.

The study’s authors tell Reuters that their findings support the thinking that a person’s family history can be used to gauge their own skin cancer risk. In addition, genetic studies may be a useful way to identify potential targets for treating or preventing the disease.

The skin cancer foundation says that having one bad sunburn as a child more than doubles a person’s chances of developing melanoma later in life.

Preventing skin cancer by avoiding sun damage is key, according to the Mayo Clinic. Healthcare providers recommend wearing sunscreen year-round, using protective clothing, staying out of the sun between the hours of 10 a.m. and 4 p.m. and having your skin checked by a doctor annually.