According to this New York Times article published 6/1/22, the Celiac Disease Foundation says that there are currently 24 potential therapies at various stages of development.
Of the potential therapies in development, the one furthest along — currently being tested in a Phase 3 trial — is a drug called larazotide, which decreases the porosity of the small intestine and has shown promise from earlier trials. In a best-case scenario, larazotide could be approved and on the market within two to three years, said Dr. Fasano, who was involved with the development of the drug and has a financial interest in it.
I first heard Dr. Fasano speak nearly 15 years ago when he said that a drug to treat Celiac Disease would be available in 5 years. That was 10 years ago. Hope he is more accurate with his current prediction.