Could a Low-Dose immune drug stop recurrent miscarriages?

NCT ID NCT03970954

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This early trial tested whether low doses of interleukin-2 (IL-2) could boost regulatory T cells in women who had at least five unexplained miscarriages. The goal was to see if this immune-calming approach could eventually prevent the body from rejecting a pregnancy. Only 18 women took part, and the study measured changes in immune cells rather than actual pregnancy success.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
low-dose interleukin-2 (IL-2)
What this could lead to
If it works, this could lead to a treatment that prevents miscarriages by calming the immune system.
What could go wrong
This is a very small, early-phase trial with only 18 participants. It only measured immune cell changes, not pregnancy outcomes, so it may not lead to a proven therapy.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Abortion, Spontaneous habitual spontaneous abortion

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Bornes

    Paris, Hopital Tenon, 75020, France

  • Kayem

    Paris, Hopital Trousseau, 75012, France

  • Mekinian

    Paris, Hopital Saint Antoine, 75012, France

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