“Transgender mice” was never about transgenic mice, as far as I can tell (and confirmed by Claude[1]). They were studies about the health effects of hormone therapy (for gender care or otherwise), which used mice as their model organism. Doubling down is the correct response.
The origin: In March 2025, during a joint address to Congress, President Trump claimed the federal government (via DOGE cuts) had exposed $8 million in NIH funding “for making mice transgender,” citing it as an example of wasteful spending.
What the underlying research actually was: The claim referenced six NIH grants, and all six actually focused on the safety of various hormone treatments rather than on whether it was possible to make mice transgender — the studies looked at how hormone therapy affects things like breast cancer risk, HIV vaccine response, asthma symptoms, and fertility. NIH funds these hormone-therapy experiments in mice to determine how sex hormones affect humans undergoing gender-affirming care, as well as people with conditions like endometriosis, infertility, and certain cancers. ForbesScienceadvancement
The “transgender” vs. “transgenic” confusion: Many people initially assumed the term was a misquote of the scientific term “transgenic mice” (genetically modified mice), but researchers themselves actually used the term “transgendered” in their own publications — so it wasn’t purely a media/political mix-up, though critics argued the framing (“making mice transgender”) mischaracterized the research goal.
The dollar figure grew over time: The claim didn’t stay at $8 million. A watchdog group, White Coat Waste Project, had earlier claimed the government “wasted” over $10 million on “transgender mice and monkeys” research, then later claimed spending had reached “a quarter-billion and counting” on transgender animal experiments. Later reporting from the group cited to the Washington Times put active NIH grants at 26 projects totaling $64 million. Washington Times
Fact-checker back-and-forth: CNN initially declared Trump’s $8 million claim false, saying reporters couldn’t find the research, but hours later had to retract and acknowledge the $8 million figure was accurate, while still saying the claim needed context. Washington Times
Aftermath: Following the speech, NIH terminated at least 14 additional grants focused on transgender human health research, and placed seven employees from its former Sexual and Gender Minority Research Office on administrative leave. This became part of a broader pattern of NIH funding cuts to LGBTQ-related research under the administration. One case — a UC San Diego transgender mice study — has continued to draw legal and political attention, including being reinstated under court order and drawing a FOIA lawsuit from an animal-testing watchdog group.
So in short: the “transgender mice” phrase is real (used by the researchers themselves), but it referred to legitimate hormone-therapy safety studies, not literal attempts to change mice’s gender identity — the political framing simplified genuine biomedical research into a viral “government waste” talking point, whose dollar figures kept escalating across different reports.
“Transgender mice” was never about transgenic mice, as far as I can tell (and confirmed by Claude[1]). They were studies about the health effects of hormone therapy (for gender care or otherwise), which used mice as their model organism. Doubling down is the correct response.
Response
What’s the background on “transgender mice”?
Searched the web
Here’s the background:
The origin: In March 2025, during a joint address to Congress, President Trump claimed the federal government (via DOGE cuts) had exposed $8 million in NIH funding “for making mice transgender,” citing it as an example of wasteful spending.
What the underlying research actually was: The claim referenced six NIH grants, and all six actually focused on the safety of various hormone treatments rather than on whether it was possible to make mice transgender — the studies looked at how hormone therapy affects things like breast cancer risk, HIV vaccine response, asthma symptoms, and fertility. NIH funds these hormone-therapy experiments in mice to determine how sex hormones affect humans undergoing gender-affirming care, as well as people with conditions like endometriosis, infertility, and certain cancers. ForbesScienceadvancement
The “transgender” vs. “transgenic” confusion: Many people initially assumed the term was a misquote of the scientific term “transgenic mice” (genetically modified mice), but researchers themselves actually used the term “transgendered” in their own publications — so it wasn’t purely a media/political mix-up, though critics argued the framing (“making mice transgender”) mischaracterized the research goal.
The dollar figure grew over time: The claim didn’t stay at $8 million. A watchdog group, White Coat Waste Project, had earlier claimed the government “wasted” over $10 million on “transgender mice and monkeys” research, then later claimed spending had reached “a quarter-billion and counting” on transgender animal experiments. Later reporting from the group cited to the Washington Times put active NIH grants at 26 projects totaling $64 million. Washington Times
Fact-checker back-and-forth: CNN initially declared Trump’s $8 million claim false, saying reporters couldn’t find the research, but hours later had to retract and acknowledge the $8 million figure was accurate, while still saying the claim needed context. Washington Times
Aftermath: Following the speech, NIH terminated at least 14 additional grants focused on transgender human health research, and placed seven employees from its former Sexual and Gender Minority Research Office on administrative leave. This became part of a broader pattern of NIH funding cuts to LGBTQ-related research under the administration. One case — a UC San Diego transgender mice study — has continued to draw legal and political attention, including being reinstated under court order and drawing a FOIA lawsuit from an animal-testing watchdog group.
So in short: the “transgender mice” phrase is real (used by the researchers themselves), but it referred to legitimate hormone-therapy safety studies, not literal attempts to change mice’s gender identity — the political framing simplified genuine biomedical research into a viral “government waste” talking point, whose dollar figures kept escalating across different reports.