The H2a2b and Subclades Mitochondrial DNA Project encourages you to join only if you have the following variants, 16235G and 16291T in your HVR1 results. It includes anyone in Haplogroup H who has St. Luke's Motif. 

Those who have 16291T without the 16235G may join as long as they are assigned the H2a2b subclade. We are using the current tree at PhyloTree.org.

See the following video: https://video.nationalgeographic.com/video/testing-st-luke-sci