When the protein targeted by apitegromab is blocked, less lean body mass is lost during weight loss caused by tirzepatide.
See the scientific wording
Inhibition of the protein targeted by apitegromab reduces the loss of lean body mass during weight loss induced by tirzepatide.
Very strong evidence
Randomized trialsOne high-quality study supports this claim.
What the research says
1 study reviewedSupporting (1)
Randomized Controlled TrialHuman2026
When people took a drug called apitegromab along with tirzepatide, they lost much less muscle than those who took a placebo—even though both groups lost the same amount of total weight. This means blocking the protein myostatin helps keep muscle while losing weight.
Contradicting (0)
No contradicting studies found yet
That doesn't mean it's settled — it just means no study has tested the opposite.
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A protein that normally stops muscle growth is blocked, allowing muscle cells to build more protein and break down less, so muscle mass stays stable even when the body is losing weight.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting study
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