Forde, also an assistant coach with the Perth Wildcats, made the announcement last week following the side�s loss to the Stirling Senators.
He was the first coach in the team�s history to take it to a championship, defeating the Geraldton Buccaneers in last year�s grand final 99-83.
An East Perth District Basketball Association spokeswoman said the association gave Adam and his family their full support during this difficult time.
�On behalf of everyone involved with the State Basketball League, we would like to wish Adam and his family well wishes during some obviously tough times and offer our full support,� she said.
�We look forward to his return to the SBL in the hopefully not too distant future.�
In Forde�s absence, Joe Alan Tupaea will take over as head coach, while Neville Robb will remain lead assistant on the bench.