NCT00341419

Brief Summary

This study will characterize the gene mutations responsible for pseudoxanthoma elasticum (PXE) and correlate them with disease manifestations in males and females. PXE is an inherited disorder that affects the connective tissue in some parts of the body. Calcium and other minerals are deposited in the connective tissue, causing changes in the skin, eyes, cardiovascular system and gastrointestinal system. Some effects of PXE can cause serious medical problems, while others have less impact. Symptoms often appear earlier and are more severe in females than in males, but there is no way to predict how the disorder will progress in any given individual. Candidates for this study are recruited through PXE International, an organization that provides patient support and supports research on the disease. The organization collects biological samples and medical information on patients and family members to help further research on the disease. Families that have samples from the patient, both parents, and at least one sibling may be eligible for this study. Grandparents and extended family members may be included in certain instances. Participants provide a blood sample, a sample of cells scraped from the inside of the cheek (buccal cells) and a medical history. The samples are analyzed for gene variants and the findings are correlated with disease signs and symptoms. ...

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
188

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Feb 2005

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 16, 2005

Completed
1.3 years until next milestone

First Submitted

Initial submission to the registry

June 19, 2006

Completed
2 days until next milestone

First Posted

Study publicly available on registry

June 21, 2006

Completed
6.9 years until next milestone

Study Completion

Last participant's last visit for all outcomes

May 14, 2013

Completed
Last Updated

December 17, 2019

Status Verified

May 14, 2013

First QC Date

June 19, 2006

Last Update Submit

December 14, 2019

Conditions

Pseudoxanthoma ElasticumPXE

Keywords

ABC TransporterABCC6Slkin LaxityGenetic AssociationAngiod StreaksPseudoxanthoma ElasticumPXE

Eligibility Criteria

Age12 Years+
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may not qualify if:

  • A representative set of collected families will be studied. No subjects within these families will be excluded.
  • Families will be selected that have samples from both parents and at least one sibling in addition to the proband.
  • The siblings will include both affected and unaffected.
  • If grandparents are available they will also be typed to help in phase determination.
  • Extended relatives will only be selected in multiple generation families.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

National Cancer Institute (NCI), 9000 Rockville Pike

Bethesda, Maryland, 20892, United States

Location

Related Publications (3)

  • Hagedorn C. Influences of soil acidity on Streptomyces populations inhabiting forest soils. Appl Environ Microbiol. 1976 Sep;32(3):368-75. doi: 10.1128/aem.32.3.368-375.1976.

    PMID: 10835BACKGROUND

  • Dean M, Rzhetsky A, Allikmets R. The human ATP-binding cassette (ABC) transporter superfamily. Genome Res. 2001 Jul;11(7):1156-66. doi: 10.1101/gr.184901.

    PMID: 11435397BACKGROUND

  • Bodzioch M, Orso E, Klucken J, Langmann T, Bottcher A, Diederich W, Drobnik W, Barlage S, Buchler C, Porsch-Ozcurumez M, Kaminski WE, Hahmann HW, Oette K, Rothe G, Aslanidis C, Lackner KJ, Schmitz G. The gene encoding ATP-binding cassette transporter 1 is mutated in Tangier disease. Nat Genet. 1999 Aug;22(4):347-51. doi: 10.1038/11914.

    PMID: 10431237BACKGROUND

MeSH Terms

Conditions

Pseudoxanthoma Elasticum

Condition Hierarchy (Ancestors)

Hemostatic DisordersVascular DiseasesCardiovascular DiseasesHemorrhagic DisordersHematologic DiseasesHemic and Lymphatic DiseasesSkin AbnormalitiesCongenital AbnormalitiesCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesSkin Diseases, GeneticGenetic Diseases, InbornConnective Tissue DiseasesSkin and Connective Tissue DiseasesSkin Diseases

Study Officials

  • Michael Dean, Ph.D.

    National Cancer Institute (NCI)

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Sponsor Type
NIH

Study Record Dates

First Submitted

June 19, 2006

First Posted

June 21, 2006

Study Start

February 16, 2005

Study Completion

May 14, 2013

Last Updated

December 17, 2019

Record last verified: 2013-05-14

Locations

US(1)