Efficacy and Safety of Human Lipoprotein Lipase (LPL)[S447X] Expressed by an Adeno-Associated Viral Vector in LPL-deficient Subjects
An Open-label Study to Assess the Efficacy and Safety of Alipogene Tiparvovec (AMT-011), Human LPL [S447X], Expressed by an Adeno-Associated Viral Vector After Intramuscular Administration in LPL-deficient Adult Subjects
  • Phase

    Phase 2/Phase 3
  • Study Type

  • Status

    Completed No Results Posted
  • Study Participants

This trial is designed to expand the currently available data on the safety and efficacy of alipogene tiparvovec treatment in lipoprotein lipase deficiency (LPLD) and to further the understanding of possible mechanisms of action of the therapy.
LPLD is a rare autosomal recessive disorder, characterized by the presence of marked chylomicronemia and hence hypertriglyceridemia. Clinically the most severe manifestation of chylomicronemia, is acute pancreatitis, which can be lethal. There is no effective therapy available to modulate the course of the illness and prevent complications for these patients. The current clinical management consists of severe reduction of dietary fat that is hard if not almost impossible to comply with. LPLD subjects continue to experience pancreatitis attacks, and are admitted to intensive care units on several occasions.

Alipogene tiparvovec corrects or restores lipoprotein lipase (LPL) function long term, and hence reverses some symptoms, halts the disease progression and prevents further complications. Alipogene tiparvovec gene therapy ensures that a catabolically beneficial variant of the human LPL gene, LPL[S447X] is expressed and active in the relevant tissues in humans. Delivery of the gene is realized via intramuscular injection of an adeno-associated viral vector, pseudotyped with AAV1 capsids.
Study Started
Feb 28
Primary Completion
Aug 31
Study Completion
Apr 30
Last Update
Sep 29

Genetic Alipogene Tiparvovec (AMT-011), Human LPL [S447X]

intra muscular, 1 x E12 gc per kg body weight, injected in a single series of intramuscular injections

  • Other names: Glybera, AMT-011

Drug mycophenolate mofetil

oral, 2 g/day, day -3 till week 12

  • Other names: CellCept

Drug cyclosporine

oral, 3 mg/kg/day, day -3 till week 12

  • Other names: Neoral

Drug methylprednisolone

single intravenous bolus of methylprednisolone (1 mg/kg bodyweight)

  • Other names: Solumedrol®

Treatment arm Experimental

Gene Therapy


Inclusion Criteria:

Being diagnosed with LPLD defined as:

Confirmed homozygosity or compound heterozygosity for the mutations in the LPL gene, resulting in LPL deficiency
Having a post heparin plasma LPL activity of ≤ 20% of normal or a well defined mutation for which it is documented that the LPL mass and activity are within the limits described above
Having a history of pancreatitis
Having fluctuating TG concentrations with median fasting plasma TG concentrations > 10.00 mmol/L

Being in good general physical health with, in the opinion of the investigator:

No other clinically significant and relevant abnormalities in the medical history which could interfere with the participation to the study
No clinically significant abnormalities at the physical examination which could interfere with the participation to the study
No clinically significant abnormalities at the routine laboratory evaluation performed prior to the trial
Women of non-child bearing potential or with a negative pregnancy test.
Non breast feeding women
Women using appropriate contraceptive (if relevant) and their partner using barrier contraception 2 weeks before starting immunosuppressive therapy
Men practicing barrier birth control and their partner using appropriate contraception.
Willing to fully comply with all study procedures and requirements of the trial such as restrictions to a low-fat diet.

Exclusion Criteria:

Having a chronic inflammatory muscle disease.
Any current or relevant previous history of serious, severe or unstable physical or psychiatric illness, any medical disorder that may make the subject unlikely to fully complete the study, or any condition that presents undue risk from the study medication or procedures based on the investigator's opinion(eg. malignant neoplasia)
Active infectious disease of any nature, including clinically active viral infections

Having one of the following outcomes from the blood screening tests after appropriate correction due to the presence of chylomicronemia:

Platelet count < 100 x 109 /L
Hemoglobin < 6.2 mmol/L
Liver function disturbances (bilirubin ≥1.5 x normal, ALT > 2 x ULN (upper limit of normal)
CPK > 2 x ULN
Cockcroft-Gault estimated creatinine clearance < 50cc/min
PT and PTT outside normal range or not determinable unless judged as acceptable for the subjects by the investigator
Having a positive test for HIV, Hepatitis B, Hepatitis C or being positive for tuberculosis
Obesity defined as body mass index (BMI) > 30 kg/m2
Having a recent history of alcohol or drug abuse e.g. barbiturates, cannabinoids and amphetamines, and the subject is positive in a urine screen for drugs of abuse
Using anti-coagulants
Participation in another clinical trial or receipt of any other investigational drug within 30 days of screening or planning to participate in another clinical trial during the course of the study, except observational studies
Subjects which cannot be treated with immunosuppressive medication or steroids
Known to be allergic to any constituent of the therapy (including the immune suppressors) or a having a condition that prohibits the use of therapy
Received previous treatment with AMT-010, Alipogene tiparvovec or other gene therapy investigational product
Requiring a post heparin plasma LPL activity test for diagnostic confirmation and having a history of heparin induced thrombocytopenia or other heparin related complications
No Results Posted