Nick Lui-Toso and the Panthers have agreed to a contract extension which will see the 22-year-old stay with the club until 2020.
The Panthers prop has been a consistently quality asset for the Panthers since arriving at the end of 2016.
"Nick is a talented and hardworking young man who has shown plenty of potential in his two years at Panthers," Panthers Executive General Manager Phil Gould AM told penrithpanthers.com.au.
"I honestly believe this contract gives him an opportunity to become a regular member of our NRL squad.
"I'm predicting big things for Nick and we're very lucky to have him."
Lui-Tose played a key role in the Panthers ISP side as they went on to win the premiership and national title last season.