Home / SINE SINE Look up SINE in Wiktionary, the free dictionary. SINE can refer to : Short interspersed nuclear elements, a type of retrotransposon in DNA Selective inhibitors of nuclear export, a type of candidate cancer drug See also Sine (disambiguation) Topics referred to by the same term This disambiguation page lists articles associated with the title SINE.If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.