A Phase 1 interventional study of AAVrh10-PCCA low dose and AAVrh10-PCCA middle dose in Propionic Acidemia, sponsored by Mayo Clinic. Recruiting at 1 site in United States. Open to participants aged 6 Months to 2 Years. Per ClinicalTrials.gov, last updated 2026-08-21.
Sponsored by Mayo Clinic · Phase 1, Interventional, and Treatment
Propionic acidemia is a genetic metabolic disorder characterized by metabolic acidosis, ketosis, vomiting, lethargy, cognitive impairment, and risk of death. It results from loss of function of the mitochondrial enzyme propionyl-CoA carboxylase and can be due to disease-causing variants in the PCCA gene, leading to accumulation of propionyl-CoA and its toxic metabolites. The purpose of this trial is to evaluate the safety and potential therapeutic benefit of an AAV-based gene therapy for propionic acidemia in patients with genetically confirmed biallelic variants in PCCA.
23 studies on the registry are indexed under Propionic Acidemia; 8 are open to participants now.
This study's planned enrollment of 9 is below the median of 30 across 12 interventional studies indexed under Propionic Acidemia.
Browse Propionic Acidemia studies →Mayo Clinic is the lead sponsor of 3,269 studies on the registry; 672 are open to participants now.
Of its 452 completed or terminated interventional studies of FDA-regulated products, 321 (71%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
NYHA class (heart failure)
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
AAVrh10-PCCA, single dose of 2 x 10\^12 vg per kilogram of body weight (first three patients), IV administration
Drug: AAVrh10-PCCA low dose
AAVrh10-PCCA, single dose of 8 x 10\^12 vg per kilogram of body weight (middle three patients), IV administration
Drug: AAVrh10-PCCA middle dose
AAVrh10-PCCA, single dose of 3.2 x 10\^13 vg per kilogram of body weight (last three patients), IV administration
Drug: AAVrh10-PCCA high dose
AAVrh10-PCCA (Dose of 2 x 10\^12 vg per kg body weight) is an adeno-associated viral vector containing the adeno-associated virus terminal repeat sequences flanking a transgene cassette harboring the cytomegalovirus (CMV) immediate-early enhancer and beta actin promoter, the human PCCA cDNA, and the bovine growth hormone polyadenylation sequence.
AAVrh10-PCCA (Dose of 8 x 10\^12 vg per kg body weight) is an adeno-associated viral vector containing the adeno-associated virus terminal repeat sequences flanking a transgene cassette harboring the cytomegalovirus (CMV) immediate-early enhancer and beta actin promoter, the human PCCA cDNA, and the bovine growth hormone polyadenylation sequence.
AAVrh10-PCCA (Dose of 3.2 x 10\^13 vg per kg body weight) is an adeno-associated viral vector containing the adeno-associated virus terminal repeat sequences flanking a transgene cassette harboring the cytomegalovirus (CMV) immediate-early enhancer and beta actin promoter, the human PCCA cDNA, and the bovine growth hormone polyadenylation sequence.
Incidence of treatment-emergent adverse events
Total number of treatment-emergency adverse events. Adverse events include serious adverse events, lab safety tests, vital signs, and dose-limiting toxicities.
Time frame: 7 years
Plan to share: No
No publications or documents are linked to this record.
Started Jul 2026 (actual). Primary completion is estimated for Dec 2032, 77 months after the start.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.