AAP has been told Pearson and Taliah Fuimaono were the only two incumbent NSW players omitted from coach John Strange's 30-player squad on form.
Both were also not invited to Saturday's induction day as the Sky Blues begin a new era after Kylie Hilder stepped down in the wake of last year's 2-1 series loss.
It is understood incumbent five-eighth Corban Baxter was not considered for selection in the camp as she recovers from a knee injury.
The remaining fit Sky Blues who played in the inaugural three-match women's series will take part in the camp, which begins on Tuesday.
Pearson will not have the chance to reassert her Origin credentials this year, with Origin I set for May 1 - two months before the NRLW season begins.
Gold Coast's Fuimaono is now also on the outer but was used sparingly as the Sky Blues' bench utility last season.
Strange has already earmarked a possible replacement for Pearson by naming St George Illawarra teenager Reh in his extended squad.
Reh impressed Strange as NSW thrashed Queensland 46-4 in last year's under-19s Origin match.
But the Sydney Roosters coach has been tracking her progress since before that game at Leichhardt Oval.
"I've been watching her come through the Illawarra Steelers' system for quite a few years," Strange said.
The 19-year-old halfback is a genuine selection chance this year, as is teenage Newcastle second-rower Evah McEwen, who was also picked in Strange's squad.
"I've included them in the squad not for the future but because I think they're ready to go this year if they put their best foot forward and work hard at training," Strange said.
"I spoke to both of them and just made sure that they come in with an attitude that they're on an even keel with every other player."
Knights gun Jesse Southwell firms as Reh's biggest competition for the No.7 jersey, having started in the halves for both games of the drawn 2023 series.
Southwell will also participate in the Sky Blues' training camp from Tuesday.
The ankle injury Kirra Dibb suffered playing for the Indigenous All Stars has ruled the North Queensland half out of contention for at least the first two Origin games.
When fit, Dibb, Southwell and Reh now all appear ahead of Pearson in the pecking order, with the goal-kicking 31-year-old facing an uphill battle to return to the Origin arena.
Hilder made no changes to her 17 throughout the 2024 series, prepared to stick by a team that convincingly won the series opener in Brisbane.
But at Saturday's induction day, Sydney Roosters coach Strange reminded his charges that incumbency would count for little on his watch.
"I'm not concerned whether you've played for NSW or not, or for the Jillaroos," he said.
"Whoever works hard, understands how we want to play and does everything possible to get into that Origin side for game one, they'll be playing."Â
24°C