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Alpha-1 Antitrypsin Deficiency Adult Liver Study

A legfontosabb adatok

Ki végzi
St. Louis University
Hol
Boston, San Diego és St Louis (Egyesült Államok)Mind a 3 helyszín megnézése
Azonosító
Állapot
Fut, nem toboroz
Résztvevők
120 fő, tervezett
Kezdés
2013. dec.
Várható befejezés
2027. dec.
A vizsgálat típusa
Megfigyeléses, 3 csoport
A vizsgált kezelések
  • Liver Biopsy (Biopsy Group Only)
A regiszteradat frissítve
2026. április 27.

Ki vehet részt

Életkor
18 év felett
Nem
Nők és férfiak
Egészséges önkéntesek
Nem vehetnek részt

A regiszter feltételei, szó szerint

Mind a 39 feltétel megnézéseKevesebb

Ki vehet részt

  • Adults (≥ 18 years of age), with Alpha-1 Antitrypsin Deficiency
  • Documented evidence Pi-ZZ phenotype or genotype
  • Both genders, all races and ethnic groups
  • Willingness to be followed for up to 5 years
  • Adults (≥ 18 years of age), with alpha-1-antitrypsin deficiency
  • Documented evidence PI-ZZ phenotype or genotype
  • Documented evidence of portal hypertension or evidence of advanced liver disease defined by Child-Pugh Class B or C (score ≥ 7), or previous liver biopsy with an Ishak Fibrosis Score ≥ 4
  • Both genders, all races and ethnic groups
  • Willingness to be followed for up to 5 years
  • Adults (≥ 18 years of age), with alpha-1-antitrypsin deficiency
  • Pre-transplant documented evidence of PI-ZZ phenotype or genotype
  • Documented evidence of liver transplantation
  • Both genders, all races and ethnic groups

Ki nem vehet részt

  • Known congenital or metabolic liver disease (e.g.: Wilson's, glycogen storage, cystic fibrosis)or iron overload as evidenced by ≥ Grade 3 iron staining on a previous liver biopsy
  • Concomitant severe underlying systemic illness or medical condition which in the opinion of the investigator, would make the patient unsuitable for the study or would interfere with completion of follow-up
  • Known congenital or metabolic liver disease (e.g.: Wilson's, glycogen storage, cystic fibrosis) and iron overload as evidenced by ≥ Grade 3 iron staining on a previous liver biopsy
  • Concomitant severe underlying systemic illness or medical condition which in the opinion of the investigator, would make the patient unsuitable for the study or would interfere with completion of follow-up
  • Concomitant severe underlying systemic illness or medical condition which in the opinion of the investigator, would make the patient unsuitable for the study or would interfere with completion of study requirements
  • Evidence of advanced liver disease defined by Child-Pugh Class B or C (score ≥ 7)
  • Known advanced lung disease defined as forced expiratory volume at one second (FEV1) < 40 % of Predicted
  • History of Organ Transplantation
  • Vascular disorders of the liver (e.g.: cardiac sclerosis, acute or chronic Budd-Chiari, hepatoportal sclerosis, peliosis)
  • Known HIV positivity
  • Diagnosis of malignancy within the last 5 years
  • Failure of the participant to sign informed consent or Health Insurance Portability and Accountability Act (HIPAA) documents; Known Severe Liver Disease Group:
  • History of Organ Transplantation
  • Vascular disorders of the liver (e.g.: cardiac sclerosis, acute or chronic Budd-Chiari, hepatoportal sclerosis, peliosis)
  • Known HIV positivity
  • Diagnosis of malignancy within the last 5 years which in the opinion of the investigator, would make the patient's follow-up problematic or the results uninterpretable
  • Failure of the participant to sign informed consent or HIPAA documents; Post Liver Transplant Group
  • Failure of the participant to sign informed consent or HIPAA documents
  • Evidence of chronic hepatitis B (marked by the presence of HBsAg in serum) or Hepatitis C (marked by the presence of anti-hepatitis C virus (HCV) or HCV RNA in serum)
  • Evidence of chronic hepatitis B (marked by the presence of HBsAg in serum) or Hepatitis C (marked by the presence of anti-HCV or HCV RNA in serum)
  • Active substance abuse, that in the opinion of the study investigator, would interfere with adherence to study requirements
  • Inability to comply with the longitudinal follow-up as outlined in the protocol
  • Active substance abuse, that in the opinion of the study investigator, would interfere with adherence to study requirements
  • Inability to comply with the longitudinal follow-up as outlined in the protocol
  • Active substance abuse, that in the opinion of the study investigator, would interfere with adherence to study requirements

Egyéb feltételek

  • Liver Biopsy Group:

Helyszínek itt: Egyesült Államok

  • Boston University School of MedicineBoston, Egyesült ÁllamokNo longer taking part
  • University of CaliforniaSan Diego, Egyesült ÁllamokNo longer taking part
  • Saint Louis UniversitySt Louis, Egyesült ÁllamokNo longer taking part

A vizsgálatról

Mit akar kideríteni a vizsgálat

The investigators hypothesize that there is liver injury (inflammation, fibrosis, cirrhosis) in adults with Alpha-1 Antitrypsin Deficiency (AATD), which is asymptomatic, under-recognized, and undiagnosed. In addition, the investigators believe that the genetic and environmental factors that play an important role in the development of alpha-1 antitrypsin (AAT) liver disease, can be identified by comparing a cohort database of clinical disease information to linked biospecimen and DNA samples.

A vizsgálat 3 csoportja

  • Liver Biopsy

    Participants will provide liver tissue specimens collected at the time of liver biopsy, to determine the rate of progression of liver injury in adults with Pi-ZZ Alpha-1 Antitrypsin Deficiency.

    Kezelés: Liver Biopsy (Biopsy Group Only)

  • Known Severe Liver Disease

    Participants will provide samples of serum, plasma, and DNA at defined time points to determine what genetic and environmental modifiers and biomarkers are associated with severe clinical liver disease, such cirrhosis, portal hypertension and liver failure in adults with Pi-ZZ Alpha-1 Antitrypsin Deficiency.

  • Post Liver Transplant

    Participants will provide a DNA sample to determine what genetic and environmental modifiers are associated with the need for liver transplantation in adults with Pi-ZZ Alpha-1 Antitrypsin Deficiency.

Adatok és források

Regiszteradat
Szerepel a ClinicalTrials.gov-on.
Hivatalos cím
Alpha-1 Antitrypsin Deficiency Adult Clinical and Genetic Linkage Study
A regiszteradat frissítve
2026. április 27.