Some good news is that it shows safety, and possible efficacy.
Some bad news is that no plans were mentioned for a Phase 2 trial, only that "Patients will continue to be evaluated every six months for another five years in the study’s extension phase."
PNT article: Stem Cell Therapy Shows Safety, Possible Efficacy in Early Trial.
Encouraging.
This was quite a controversial trial initially due to a lack of preclinical evidence published before the trial. Many experts worried that it would fail dramatically and set the stem cell progress back decades. So it good news that its been discovered to be safe in the small trial and at the very least has had no negative impact.
Update on BlueRock Therapeutics stem-cell Phase 1 trial (which uses Human Embryonic Stem Cell-Derived Midbrain Dopamine Neurons)
Aspen FINALLY Moving forward with Stem Cell Trials 
doc vs Parkinson’s stem cell trial - Jan 2023 update
Encouraging results from the phase-I trial! The NADPARK study: A randomized phase I trial of nicotinamide riboside supplementation in PDResults of a Phase 1b trial of MODAG's oligomer modulator anle138b evaluating the safety tolerability in healthy volunteers
