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ABCB4 Gene Mutations in Intrahepatic Cholestasis of Pregnancy and Controls

R

Regional University Hospital Center (CHRU)

Status

Completed

Conditions

Intrahepatic Cholestasis of Pregnancy

Study type

Observational

Funder types

Other

Identifiers

NCT00700232
AOHP06-YB GEN CIG

Details and patient eligibility

About

Mutations of the ATP binding cassette subfamily B member 4 (ABCB4) gene, a gene involved in a subtype of progressive familial intrahepatic cholestasis, have been reported in women suffering from intrahepatic cholestasis of pregnancy. The true incidence and the role of these ABCB4 gene mutations in patients suffering from intrahepatic cholestasis of pregnancy have not been clearly established.

The aim of the present study is to describe the nature and frequency of these mutations in a series of patients with intrahepatic cholestasis of pregnancy and to compare with a control group of pregnant women without intrahepatic cholestasis of pregnancy.

Full description

Intrahepatic cholestasis of pregnancy was defined by pruritus and elevated serum alanine aminotransferase activity or bile acid concentration, with recovery after delivery. Patients with intercurrent liver disease were excluded.

The entire ABCB4 gene coding sequence and the promoter region were analyzed, during the routine medical management, by single strand conformation polymorphism and/or sequencing in 50 unrelated Caucasian patients with intrahepatic cholestasis of pregnancy.

The genomic variants detected in these patients with intrahepatic cholestasis of pregnancy will be sought in 100 control women from Caucasian origin recruited in the same hospital.

Enrollment

120 patients

Sex

Female

Ages

18+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion and exclusion criteria

For the control group :

Inclusion Criteria:

  • pregnant woman (age > 18 years) during the third trimester
  • caucasian and born in France
  • multiparous (with at least 2 full term pregnancies)
  • with informed written consent

Exclusion Criteria:

  • generalized pruritus and/or liver disease during pregnancy
  • liver disease secondary to oral contraception
  • Chronic liver disease
  • disease during current pregnancy

Trial design

120 participants in 1 patient group

1
Description:
Normal multiparous pregnant women without intrahepatic cholestasis of pregnancy (control group)

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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