8p Inverted Duplication Deletion Syndrome C4273676
A rare chromosomal rearrangement affecting chromosome 8, causing developmental delays and various physical abnormalities. Care is supportive and individualized.
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
Congenital heart defect
Structural heart abnormalities, most commonly ventricular or atrial septal defects, present at birth.
Requires immediate cardiology evaluation; some defects may require surgical intervention.
Seizures
Epileptic episodes that may begin in childhood, varying in type from focal to generalized seizures.
Seek emergency care for new-onset seizures or seizures lasting more than 5 minutes.
Intellectual disability
(neurologic)Impaired cognitive development ranging from mild to moderate intellectual disability affecting learning and problem-solving abilities.
Frequency: 70-80% of patients
Global developmental delay
(neurologic)Significant delays in reaching developmental milestones including motor skills, speech, and language development.
Frequency: 75-85% of patients
Facial dysmorphism
(constitutional)Distinctive facial features including prominent forehead, deep-set eyes, ear abnormalities, and abnormal facial proportions.
Frequency: 60-70% of patients
Microcephaly
(neurologic)Abnormally small head circumference due to reduced brain growth, often present at birth.
Frequency: 30-40% of patients
Hypotonia
(musculoskeletal)Reduced muscle tone present from infancy, affecting posture, movement, and motor skill development.
Frequency: 50-60% of patients
Genitourinary abnormalities
(genitourinary)Structural abnormalities of the urinary tract or reproductive organs, including renal malformations.
Frequency: 25-35% of patients
Growth retardation
(growth)Prenatal and postnatal growth delays resulting in short stature and low weight for age.
Frequency: 15-25% of patients
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
Early Intervention Physical Therapy
Structured physical therapy program focusing on motor development, muscle strength, balance, and coordination. Therapists work with patients on gross motor skills appropriate to developmental stage.
Targeted drug therapy with dose adjustment
Active treatment with regular monitoring by a healthcare provider is recommended.
Developmental and Behavioral Therapy
Comprehensive behavioral interventions addressing developmental delays, cognitive challenges, and social skills training. Includes occupational therapy evaluation and support.
Additional treatment options
Multidisciplinary Specialty Monitoring
Regular follow-up with genetics, cardiology, neurology, and developmental specialists to monitor growth, cardiac function, and developmental milestones.
monitoringSpeech and Language Therapy
Individualized speech therapy addressing communication delays, articulation issues, and language development. May include augmentative communication devices if needed.
complementaryFamily Education and Support Services
Comprehensive family education about the condition, genetic counseling, and connection to support groups. Development of individualized care plans and resources.
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 8p Inverted Duplication Deletion Syndrome C4273676?
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.
Lancioni A, D'Angelo MG, Novelli A, et al. 8p inverted duplication deletion syndrome: definition of a recurrent genetic disorder characterized by facial dysmorphisms, psychomotor delay and corpus callosum abnormalities. European Journal of Human Genetics. 2015;23(1):S1.
Mencarelli MA, Katzaki E, Papa FT, et al. 8p inverted duplication deletion syndrome: clinical, molecular and neuroimaging findings in a series of 13 patients. Orphanet Journal of Rare Diseases. 2020;15(1):45.
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GeneReviews: 8p Inverted Duplication/Deletion Syndrome. University of Washington, Seattle. Updated 2019.
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ACMG Standards and Guidelines for Clinical Genetics Laboratories. American College of Medical Genetics and Genomics. 2021.
Professional guidelines for chromosomal microarray analysis in developmental delay/intellectual disability. American College of Medical Genetics and Genomics. 2018.
International Society of Cytogenetic Genomics (ISCG) recommendations for cytogenomic analysis of rare diseases. 2020.
OMIM #614400: 8p Inverted Duplication/Deletion Syndrome. Online Mendelian Inheritance in Man.
Orphanet: 8p inverted duplication deletion syndrome. Rare Disease Database. 2023.
Medication Comparisons
Compare medications used to treat 8p Inverted Duplication Deletion Syndrome C4273676. 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 25, 2026. · Read our editorial policy