A Phase 1 interventional study of JWK008 Single intravenous infusion administration in Mucopolysaccharidosis Type I, sponsored by West China Hospital. Recruiting at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-07-25.
Sponsored by West China Hospital · Phase 1, Interventional, and Treatment
This study is a single-center, single-arm, non-randomized, open-label, non controlled, dose-escalation, prospective clinical trial designed to assess the safety, tolerability, and preliminary efficacy of JWK008 injection in patients with MPS I.
MPS I is a rare autosomal recessive disease caused by deficiency of the α-L-iduronidase (IDUA) gene, which encodes a lysosomal enzyme required for degradation of glycosaminoglycans (GAGs).While currently available therapies, enzyme replacement therapy (ERT) and hematopoietic stem cell transplantation (HSCT), provide clinical benefit over untreated disease progression,they still have significant limitations. ERT does not cross the blood-brain barrier and, therefore, does not treat the central nervous system (CNS) effects of the disease. And HSCT, although it can prevent cognitive decline in patients, has a high mortality rate and morbidity. The investigators have designed a novel IDUA fusion protein with the ability to cross the blood-brain barrier through the addition of the brain-targeting peptide Mtfp. On this basis, the investigators constructed an IDUA gene expression cassette for liver-targeted expression, and used a highly efficient liver-specific promoter to make the IDUA gene specifically and efficiently expressed in liver tissue, and the expressed protein can enter the central nervous system to exert therapeutic effects.
74 studies on the registry are indexed under Mucopolysaccharidosis I; 7 are open to participants now.
This study's planned enrollment of 6 is below the median of 14 across 47 interventional studies indexed under Mucopolysaccharidosis I.
Browse Mucopolysaccharidosis I studies →West China Hospital is the lead sponsor of 501 studies on the registry; 246 are open to participants now.
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:
When filtering, one of the following situations exists:
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.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
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 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.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
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.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
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.
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.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
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.
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.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
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.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
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.
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.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The participants will be given 5.0×10\^12vg/kg or 2.0×10\^13vg/kg body weight of JWK008
Genetic: JWK008 Single intravenous infusion administration
Six participants with MPS I will be enrolled in the study. The participantss will be divided into two different dose groups, and a "3+3" dose escalation design is used. The low dose is 5.0×10\^12vg/kg, and the high dose is 2.0×10\^13vg/kg. Only one intravenous infusion of JWK008 will be administered to each participant.
adverse events
Adverse events defined as the number of participants with adverse events according CTCAE 5.0
Time frame: 5 years
IDUA enzyme activity in blood and cerebrospinal fluid
Changes in IDUA activity in blood and cerebrospinal fluid before and after treatment are detected by laboratory testing.
Time frame: 5 years
GAG levels in blood, urine, and cerebrospinal fluid
Changes in GAG levels in blood, urine, and cerebrospinal fluid before and after treatment are detected by laboratory testing.
Time frame: 5 years
Six-Minute Walk Test
The distance that the patient could withstand the fastest walking distance on flat ground within 6 minutes before and after treatment was measured
Time frame: 5 years
Range of the joint motion(JROM) testing by measuring ruler
A measuring ruler was used to detect changes in the participant's range of the joint motion before and after treatment
Time frame: 5 years
Liver and spleen size were detected by CT
Changes in liver and spleen size were detected by CT
Time frame: 5 years
Vector shedding
As measured by vector concentration (quantitative polymerase chain reaction to JWK008 deoxyribonucleic acid ) in CSF, serum, and urine
Time frame: 5 years
Plan to share: No
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