Polkadot DeFi networks Acala and Karura plan to permanently shut down on February 10, 2027, pending approval from Acala Referendum No. 195 and Karura Referendum No. 137. The team stated that the closure is due to insufficient and fragmented DeFi liquidity within the Polkadot and Kusama ecosystems. Users are officially urged to withdraw external assets such as DOT, KSM, USDT, and USDC prior to the shutdown, while native tokens ACA and KAR will not be withdrawable.