The Transgender Equality Network is rejecting calls for teenagers to be able to change their gender without parental consent.
TENI chief Tina Kolos Orban was responding to comments made by Professor Donal O'Shea from the National Gender Service on Thursday.
Speaking to Newstalk Breakfast, he suggested this was "incredibly dangerous."
"If they're transitioning without the support of their families, the outcomes are just much poorer," he said.
"So, it's implicit, if you're allowing someone to get a Gender Recognition Cert without the support of their parents... that there is conflict."
Speaking to the show this morning, Mx Orban agreed.
"Surprisingly I have no different views [to] Professor Donal O'Shea," they said.
"I would also be concerned if the Government proposed gender recognition for people under-18 without parental consent.
"That was never discussed and never recommended by anyone.
"I don't know why this is actually something we have to talk about, because it was never questioned that parental consent was important".
'Not advocating for it'
They said proceeding without parental consent would be unconstitutional.
"I don't really know what the solution can be, honestly speaking", they said.
"I think that discussion needs to be [had], because those children who have no parental support cannot live without support, as such.
"I'm not saying that we should provide them gender recognition without parental support at all.
"We are not advocating for it and that would also be unconstitutional in Ireland, so that is not on the table at all," they added.
'Brainwashing'
However Mx Orban rejected claims that TENI was 'brainwashing' HSE senior management and politicians on the issue.
Prof O'Shea suggested trans rights groups like TENI and BelongTo were "shaping - if not brainwashing - political thinking."
"[They're] shaping - if not brainwashing - senior management thinking in the HSE to say an activist view is correct, when it's not correct," he claimed.
"The activists have it that we're right-wing restrictive, and if the politicians speak - and speak sense - they're cancelled."
Mx Orban said this is not the case.
"I would be happy to talk to Prof O'Shea in person and discuss this matter," they said.
"I believe TENI is not brainwashing anyone.
"We of course have a view, which we share with anyone who is willing to talk to us, because we are open for dialogue and engagement.
"I think our voice is one voice, which is important because we represent a community that is affected," they added.
Listen back to the full interview here:
