This study will test a Regeneron study drug called ALN-CIDEB to find out whether it may help treat a liver disease called MASH.
In this study, researchers are looking at the effect of ALN-CIDEB on reducing liver fat, liver injury, and liver scarring. The study will compare ALN-CIDEB with placebo to understand how well ALN-CIDEB works to lower the amount of fat in the liver.
The study is looking at:
* What side effects ALN-CIDEB might cause
* How well ALN-CIDEB works to change liver fat, liver injury, and liver scarring
* How the body and the liver change after having ALN-CIDEB, which can help researchers understand why ALN-CIDEB works better for some people than others