AOD-9604 is a synthetic 16-amino-acid peptide based on the tail end of human growth hormone, with an extra tyrosine added to one end
10.1089/acm.2006.12.881 Summary Keywords vitamin B12, efficacy, bioavailability, therapeutic approaches, meta-analysis, cobalamin Citation Mazur M, Ndokaj A, Salerno C, Vallone J, Ardan R, Bietolini S, Carrouel F, Wilk A, Sarig R, Ottolenghi L and Bourgeois D (2025) Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis

It includes 1-5 intramuscular or subcutaneous injections of 1000 mcg crystalline cyanocobalamin daily, followed by oral doses of 1000-2000 mcg/day Parenteral administration should be reserved for those with significant neurological symptoms NICE guideline: Vitamin B 12 deficiency in over 16s: diagnosis and management: Malabsorption as the confirmed or suspected cause of vitamin B 12 deficiency: Offer replacement to people if: lifelong intramuscular vitamin B12 Autoimmune gastritis is the cause They have had a total gastrectomy They have had a complete terminal ileal resection If the person has a vitamin B 12 deficiency because of malabsorption that is not caused by autoimmune gastritis, or a total gastrectomy or complete terminal ileal resection (for example, malabsorption caused by coeliac disease, partial gastrectomy or some forms of bariatric surgery): Offer vitamin B 12 replacement and Consider intramuscular instead of

doi: 10.1158/1078-0432.CCR-05-0983 13 PozziVDi RuscioGSartiniDCampagnaRSetaRFulviPet al
The results supported further investigation of NNMT inhibition as a drug-development concept
At progression, the metabolic profile indicates chronic BM niche remodeling: sustained CD38 blockade only partially limits ADO generation above immunoregulatory thresholds, while increased ADA/CD26 activity accelerates ADO deamination and shifts purine flux toward INO