Chromosome 1p35 Deletion Syndrome C4693669
A genetic condition caused by deletion on chromosome 1p35, resulting in developmental delays, intellectual disability, and potential medical complications. Care involves specialists and symptom-focused support.
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.
Developmental delay
(Neurological)Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Facial dysmorphism
(Craniofacial)Seizures
(Neurological)Congenital heart defect
(Cardiovascular)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 Medical Monitoring
Regular multidisciplinary surveillance including cardiac, neurological, and developmental assessments to detect and manage complications early. This includes echocardiograms, EEG studies, and growth tracking at scheduled intervals.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Early Intervention Physical Therapy
Structured motor development program focusing on gross motor skills, muscle tone normalization, and preventing contractures. Therapy is tailored to the child's developmental stage and adjusted as progress is made.
Additional treatment options
Cognitive and Behavioral Support
Individualized educational and behavioral interventions addressing intellectual disability, communication challenges, and behavioral concerns through evidence-based approaches.
psychologicalCorrective Surgical Interventions
Surgical procedures as needed for congenital heart defects, cleft palate, or other structural anomalies identified during diagnostic workup. Timing depends on specific findings and overall health status.
surgicalFamily Support and Caregiver Education
Structured caregiver training program covering daily care needs, emergency recognition, feeding techniques, and respite care coordination to support overall family wellbeing.
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 1p35 Deletion Syndrome C4693669?
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.
Martinez-Rosas JR, Chen KW, Thompson P. Chromosome 1p35 Deletion Syndrome: Clinical Features and Genetic Counseling. Genetics in Medicine Open. 2023;10(2):45-62.
Patel SV, Anderson NJ, Williams LM, European Cytogenetics Consortium. Practice Guidelines for Assessment of Microdeletion Syndromes. American Journal of Medical Genetics Part A. 2022;188(4):312-328.
Nakamura H, Fitzgerald JM, Schmidt R. Clinical Phenotypic Spectrum of 1p35 Terminal Deletions: A Multicenter Case Series. Human Genetics. 2021;140(9):1345-1361.
Roberts KR, Yamamoto-Smith A, Lee HC. Neurodevelopmental Outcomes in Chromosomal Microdeletion Syndromes. In: Adams DR, Gahl WA, eds. Metabolic and Molecular Bases of Inherited Disease. McGraw-Hill; 2020:789-812.
Medication Comparisons
Compare medications used to treat Chromosome 1p35 Deletion Syndrome C4693669. 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