@mayoconnectuser1
Yes. There are many recent studies showing that K2 can reduce plaque in arteries. The FDA has not acknowledged it but European health societies have.
From Cleveland Clinic: Improves heart health

In addition to its positive effects on blood clotting and strong bones, vitamin K helps keeps your heart healthy. That’s because of the way it acts to clear out calcium from your blood vessels.

When calcium builds up in your body, it can lead to hardening (or calcification) of your tissues, organs and blood vessels. Calcium deposits in your arteries can lead to high blood pressure, kidney disease and more.

“Vitamin K has been shown to help activate a protein that helps prevent calcium from depositing in your arteries,” Zumpano explains. “Calcium deposits contribute to the development of plaque, so vitamin K does a lot of good for your heart health.”

Some early research has shown that vitamin K2 may be more effective at clearing out calcium than vitamin K1.

One study found that people who took in at least 32 micrograms per day of vitamin K2 in their diet were 50% less likely to die from heart disease related to hardened arteries. People in that study didn’t consume any vitamin K1. ( from Cleveland Clinic Health https://health.clevelandclinic.org/vitamin-k2 )