Dr Caroline Johnson

Dr Caroline Johnson

Conservative — Sleaford and North Hykeham

Speaking in the House of Commons on 23 March 2026

Debate

Puberty Blockers Clinical Trial

Contribution

I will not because I am aware of the time. The Commission on Human Medicines’ report heard that, because trials of puberty blockers have been blocked, some clinicians are trying to use other drugs to limit puberty, such as spironolactone and cyproterone acetate. There have been reports that the number of prescriptions for spironolactone in 10 to 17-year-olds is going up. Could the Minister confirm whether that is the case and what the Government are doing to look into it? The MHRA was happy with the process; now it is not. What has changed? None of the issues raised seem to have not been raised before. The Government are being secretive about it: in February, Ministers brought forward a written statement referencing an MHRA letter in November, but the Minister is refusing to publish it. I have asked Ministers whether they talked to MHRA officials about the trial before February 2026, and they will not answer the question. There was a letter between the MHRA and KCL; I asked when it was received, when the Department became aware of it and when Ministers became aware of its contents. They will not tell me. What about the people controlling the trial? As has also been mentioned during this debate, Professor Jacob George has been recused from further involvement. According to the MHRA’s statement, this is “a precaution”, because of social media posts made before his involvement. Why have those who have made the opposite type of comment not been recused too? This will inevitably make members of the public think there is bias involved. There is an oversight board. What has the Minister done to ensure that the clinicians and scientists on that board are impartial, and that it is balanced between both perspectives? The Tavistock trial was supposed to report to the MHRA, but it did not, seemingly with no consequence. There will be lay members on the board with lived experience; will one of those be a detransitioner, or will they all be people on one side? That would increase the perception of bias in this trial. In summary, this is a trial of risky medication on healthy children, most of whose features of gender incongruence will resolve in time, given normal puberty. What is particularly worrying is that, at the end of this treatment, the trial has so many flaws that it is bound to be disputed, whatever the result. To give this treatment, the lead clinician will need to think that there is a reasonable prospect of a patient benefiting from puberty blockers. Given all that has been said, how can any clinician believe that that is the case? I hope we can all agree that we do not need a clinical trial to know that helping a child to be at peace with themselves and their body is infinitely preferable to a lifetime of harmful medical intervention.

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