__________________ Recently Produced and Distributed Young but High-Ranking Political Figure of Royal Ancestry within the Modern American Town Affectionately Referred To as Bel-Air.
Registered: Mar 2014
Location: The Proud Nation of Kekistan
Tumors are caused by cancer and in season six it's shown that they have the technology to just kinda take it out.
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Shadilay my brothers and sisters. With any luck we will throw off the shackles of normie oppression. We have nothing to lose but our chains! Praise Kek!
THE MOTTO IS "IN KEK WE TRUST"
In "The Last Man Standing: The Tale of Boba Fett" it is stated that after escaping the sarlacc, Boba Fett needed regular medical treatment to prevent himself developing cancer.
So to answer the OP, no, there is no cure for cancer in the Star Wars mythos.