Understanding Chromosome 9 P Minus Syndrome

Genotype-Phenotype Correlation in Patients With Chromosome 9 P Minus Syndrome

Observational Washington University School of Medicine · NCT04586400

This study is trying to understand the genetic details of Chromosome 9P Deletion Syndrome by looking at patients and their families to see how the missing part of the chromosome affects their health and traits.

Quick facts

Study typeObservational
Enrollment200 (estimated)
SexAll
SponsorWashington University School of Medicine Academic / other
Locations1 site (St Louis, Missouri)
Trial IDNCT04586400 on ClinicalTrials.gov

What this trial studies

This observational study aims to investigate the genetic characteristics of patients with Chromosome 9P Deletion Syndrome, a rare condition affecting approximately 200 individuals. By utilizing advanced genome sequencing techniques, researchers will identify the specific location and size of the chromosome deletion and analyze how these genetic factors correlate with the diverse phenotypic traits observed in affected patients. Participants will complete a detailed questionnaire, provide a medical release form, and submit a biospecimen sample for analysis. The study also includes parents and siblings of affected individuals to explore the genetic contributions to the condition.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals diagnosed with Chromosome 9P Deletion Syndrome and their family members.

Not a fit: Patients without a diagnosis of Chromosome 9P Deletion Syndrome or those not related to affected individuals may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of Chromosome 9P Deletion Syndrome, leading to improved diagnosis and management strategies for affected patients.

How similar studies have performed: While studies on rare genetic syndromes are limited, similar approaches using genome sequencing have shown promise in understanding genetic conditions, suggesting potential for success in this study.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Having 9P minus syndrome/ deletions on the 9th chromosome
* Parents and siblings of affected individuals may also be included to determine contribution of genetic background to phenotypic characteristics

Exclusion Criteria:

* No exclusion criteria for either affected individuals or their parents or siblings.

Where this trial is running

St Louis, Missouri

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Chromosome 9P Deletion Syndrome9p Minus SyndromeAlfi Syndrome9P Monosomy9P Partial Monosomy Syndrome
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.