Polr1c Related Disorder Cn239394
A genetic disorder affecting the machinery that helps build proteins in cells, leading to neurological and developmental problems. Care is supportive and focuses on specific symptoms.
Key facts at a glance
- ICD-10
- G40.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Seizures
Developmental delay
(neurologic)Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Hypotonia
(neurologic)Dysarthria
(neurologic)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
Multidisciplinary Specialty Care
Coordinated care involving geneticists, otolaryngologists, plastic surgeons, and developmental specialists for comprehensive disease management.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Additional treatment options
Craniofacial Reconstruction Surgery
Surgical interventions to correct structural abnormalities of the skull, face, and jaw associated with POLR1C-related disorders.
surgicalHearing Rehabilitation with Assistive Devices
Fitting and management of hearing aids, cochlear implants, or bone-anchored devices to address conductive and sensorineural hearing loss.
procedureMotor Development and Physical Therapy
Targeted exercises and developmental interventions to address motor delays and improve coordination and strength.
physical_therapyNutritional Management for Feeding Difficulties
Specialized feeding strategies including texture modifications and supplementation for patients with dysphagia or oral motor dysfunction.
dietaryWhen 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 Polr1c Related Disorder Cn239394?
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.
Weaver KN, et al. POLR1C-Related Disorders: Clinical Features and Molecular Pathophysiology. Am J Med Genet C Semin Med Genet. 2022.
Trainor PA, et al. International Consortium for Craniofacial Development Disorders: Clinical Management Guidelines for Treacher Collins Syndrome Spectrum. Nat Rev Genet. 2023.
Haller M, et al. Biallelic POLR1C Mutations Cause Treacher Collins Syndrome Type 3 with Variable Phenotypic Expression. Hum Mol Genet. 2019.
La Via W, et al. Molecular Mechanisms of Ribosome Biogenesis Disorders in Craniofacial Development. Orphanet J Rare Dis. 2021.
Medication Comparisons
Compare medications used to treat Polr1c Related Disorder Cn239394. 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