I don't know whether artificially increasing the length of telomeres increases the incidence of cancer, but cancer usually upregulates the creation of telomeras

I don't know whether artificially increasing the length of telomeres increases the incidence of cancer, but cancer usually upregulates the creation of telomerase. Telomerase is part of an enzyme complex that lengthens telomeres.[0] In other words, most (almost all?) cancers end up lengthening their telomeres themselves. [0] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4915101/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4915101/ The background section seemed to give an overview of this, however, I don't know how good this information is.