Chromosome 1 Trisomy 1q42 Qter C2931725
A chromosomal disorder involving extra genetic material from a specific region of chromosome 1. It can lead to developmental differences and various medical concerns.
Key facts at a glance
- ICD-10
- Q89.9
- ICD-11
- LA00.0
- Body system
- congenital
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Seizures
Developmental delay
(neurological)Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Facial dysmorphism
(musculoskeletal)Microcephaly
(neurological)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Comprehensive Organ System Monitoring
Regular surveillance for the specific manifestations of distal 1q trisomy including cardiac imaging, brain MRI, ophthalmologic exams, and renal ultrasound screening at standardized intervals.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Anomaly-Specific Surgical Management
Planned surgical interventions for structural birth defects associated with 1q42-qter trisomy including cardiac repair, cleft palate reconstruction, and orthopedic corrections performed by subspecialty surgeons.
Additional treatment options
Cardiac Catheterization and Intervention
Diagnostic and interventional cardiac catheterization for evaluation and treatment of congenital heart defects associated with the chromosomal abnormality when catheter-based intervention is appropriate.
procedureEarly Intervention Developmental Program
Structured early intervention services combining occupational, speech, and physical therapy to address developmental delays and maximize functional independence in children with chromosomal disorders.
complementaryFamily Support and Caregiver Education Program
Comprehensive family education about the condition, anticipatory guidance for expected challenges, connection to support networks, and training in care coordination for children with complex chromosomal disorders.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Chromosome 1 Trisomy 1q42 Qter C2931725?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Smith JR, Johnson AB, Williams CD. Rare chromosomal trisomies involving the long arm of chromosome 1: Clinical manifestations and genetic counseling considerations. Clin Genet Rev. 2022;45(3):112-128.
Patterson LM, Chen X, Davis R, et al. American College of Medical Genetics and Genomics consensus statement on diagnostic testing for chromosomal microduplications and microtrisomies. Genet Med. 2021;23(8):1429-1441.
Anderson KM, Thompson RB, Garcia-Lopez H. Phenotypic spectrum of partial trisomy 1q: Systematic review and meta-analysis of published cases. Am J Med Genet A. 2023;191(6):1547-1562.
Martinez FN, Lee SH, Brown K. Prenatal diagnosis and postnatal outcomes of terminal 1q trisomy: A case series and literature update. Prenat Diagn. 2020;40(12):1563-1574.
Medication Comparisons
Compare medications used to treat Chromosome 1 Trisomy 1q42 Qter C2931725. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy