Japan Airlines has announced a partnership with Priority Pass to let members redeem 40,000 miles for a Priority Pass Prestige membership.
Starwood points transfer 1:1 into Japan Airlines Mileage Bank, with the usual 5000 mile bonus for transfers into 20,000 miles. So 35,000 Starwood points transfer to 40,000 Japan Airlines miles. (And of course 105,000 Marriott points transfer to 35,000 Starwood points.)