08/28/2026
This is incredibly special to us, and I hope you’ll take a few minutes to listen.
My heartfelt thank you to Nadia for bringing this story forward. It means more to us than I can say to have her and North Star ALS honor not only the origin of jacifusen, but the lives and people who made it happen.
I’m so grateful to share this conversation with Erin. She lived so much of this history alongside our family, and together, Erin, Valerie, Meredith, and Project ALS were the driving force in bringing together the remarkable team that answered an urgent call to help Jaci and changed what was possible for FUS ALS.
More than anything, we hope people understand the place our courageous girls hold in this history. How jacifusen came to be cannot be told without Alex and Jaci-their lives, what they gave, and how each helped make this treatment a reality. Alex’s selfless gift after her death helped advance the research. And when Jaci became sick, with time desperately against her and no guarantees, she took an extraordinary leap of faith-not only for the chance to save her own life, but with the hope that what was learned from her could one day help others.
As their Mom and Dad, our hearts will always ache for the years and the lives Alex and Jaci should have had. Nothing will ever make that loss okay. But alongside that heartbreak is an indescribable pride in our girls. Through everything ALS took from them, they still gave so much of themselves-and what they helped set in motion did not end with them. A treatment created in a desperate race to save Jaci is now offering others with FUS ALS a chance that did not exist before.
Their lives mattered…. what they gave mattered….. and what they helped make possible continues today.
I hope you’ll listen and share.
Behind jacifusen (ulefnersen) is a story of two daughters, a family facing unimaginable loss, and a global community of FUS families determined to make their rare form of ALS matter.
In this episode, Lori Hermstad shares the lives and legacies of her daughters, Alex and Jaci, and how their family’s advocacy helped change the trajectory of FUS-ALS research. Erin Fleming, now co-founder and COO of ProJenX and formerly Director of Research Operations at Project ALS, brings the perspective of the organization that supported the Hermstad family and, together with the ALS Association, helped fund the therapeutic’s initial development.
What began with impacted families finding one another, seeking answers, and connecting with the right researchers became a clinical development program.
Jacifusen, the investigational antisense oligonucleotide first developed for and named after Jaci, is now also known as ulefnersen and has advanced to an international Phase 3 trial.
This is not a simple story of heroism. No family should have to endure what the Hermstads did to move science forward. It is a story of love and loss, philanthropy and scientific collaboration, and why even the smallest subgroups within a rare disease matter for us all.
ALS Network | Les Turner ALS Foundation | Target ALS | Genetic ALS & FTD: End the Legacy | Payne In The A.L.S.
Listen here:
Apple Podcasts: https://podcasts.apple.com/us/podcast/perspectives-the-human-side-of-als-research/id6793122559?i=1000786071491
Spotify: https://open.spotify.com/episode/5AqU8JSXFXEVTdC5nkyltu?si=4f5bc2023ede404c
YouTube: https://www.youtube.com//podcasts