PMID- 38130769 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240210 IS - 2473-4039 (Electronic) IS - 2473-4039 (Linking) VI - 7 IP - 12 DP - 2023 Dec TI - New Human Leukocyte Antigen (HLA) Antibody Formation and Creatinine Elevation With Abaloparatide in Kidney Transplant Recipient. PG - e10814 LID - 10.1002/jbm4.10814 [doi] LID - e10814 AB - A 39-year-old female with a history of kidney transplant presented to the endocrinology clinic for osteoporosis evaluation after sustaining an ankle fracture from a fall. Her kidney transplant regimen (mycophenolate mofetil 360 mg twice a day, tacrolimus 0.5 mg every morning and 0.5-1 mg every evening, prednisone 5 mg/day) and baseline creatinine (1.0-1.2 mg/dL) had been stable for several years. After an appropriate secondary workup, she was started on abaloparatide 80 mug subcutaneous daily injections for osteoporosis. She had a good initial biochemical response to therapy. However, 5 months after abaloparatide initiation she was found to have a new elevation in serum creatinine (1.17 to 1.69 mg/dL) despite stable serum tacrolimus trough levels, and two new human leukocyte antigen (HLA) antibodies (anti-HLA antibodies detected to Cw7 and DP28). Abaloparatide was stopped due to concern for immunogenicity. There was no evidence of rejection on kidney biopsy and she was restabilized on her transplant regimen with a new baseline creatinine of 1.3-1.6 mg/dL. The patient was subsequently started on teriparatide 20 mug daily subcutaneous injections for 2 years with good biochemical response, significant improvement in bone mineral density, and stable transplant regimen without additional signs of immunogenicity or rejection. This is the first case report to raise concern about immunogenicity with abaloparatide in solid organ transplant recipients. (c) 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research. CI - (c) 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research. FAU - Swanson, Christine M AU - Swanson CM AUID- ORCID: 0000-0003-1554-0862 AD - Division of Endocrinology, Metabolism and Diabetes University of Colorado Anschutz Medical Campus Aurora CO USA. AD - Eastern Colorado VA Geriatric, Research, Education, and Clinical Center (GRECC) Aurora CO USA. FAU - Krohn, Kelly AU - Krohn K AD - The Core Institute Phoenix AZ USA. FAU - Wiseman, Alexander AU - Wiseman A AD - Division of Nephrology Centura Transplant Denver CO USA. FAU - Rothman, Micol S AU - Rothman MS AD - Division of Endocrinology, Metabolism and Diabetes University of Colorado Anschutz Medical Campus Aurora CO USA. LA - eng GR - R01 HL151332/HL/NHLBI NIH HHS/United States PT - Case Reports DEP - 20230921 PL - England TA - JBMR Plus JT - JBMR plus JID - 101707013 PMC - PMC10731105 OTO - NOTNLM OT - ABALOPARATIDE OT - IMMUNOGENICITY OT - KIDNEY TRANSPLANT OT - OSTEOPOROSIS OT - TERIPARATIDE EDAT- 2023/12/22 06:42 MHDA- 2023/12/22 06:43 PMCR- 2023/09/21 CRDT- 2023/12/22 04:00 PHST- 2023/05/16 00:00 [received] PHST- 2023/07/27 00:00 [revised] PHST- 2023/08/18 00:00 [accepted] PHST- 2023/12/22 06:43 [medline] PHST- 2023/12/22 06:42 [pubmed] PHST- 2023/12/22 04:00 [entrez] PHST- 2023/09/21 00:00 [pmc-release] AID - JBM410814 [pii] AID - 10.1002/jbm4.10814 [doi] PST - epublish SO - JBMR Plus. 2023 Sep 21;7(12):e10814. doi: 10.1002/jbm4.10814. eCollection 2023 Dec.