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Col9a1 Related Stickler Syndrome Cn381175

Published: July 22, 2026Updated: August 20, 2026

A connective tissue disorder affecting type IX collagen production. It causes facial features, joint problems, hearing loss, and eye abnormalities. Care involves a multidisciplinary approach addressing specific symptoms.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
Q79.9
ICD-11
LA00.0
Body system
musculoskeletal
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Joint pain

(musculoskeletal)

Joint pain or stiffness

(musculoskeletal)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Ocular abnormalities

(musculoskeletal)

Hearing impairment

(musculoskeletal)

Midface hypoplasia

(musculoskeletal)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Healthy lifestyle changes and stress management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Ophthalmologic surveillance program

Regular comprehensive eye examinations including dilated fundoscopy, refraction testing, and retinal evaluation. Essential for early detection of retinal detachment or other vision-threatening complications.

monitoring
3

Ocular surgical intervention

Surgical repair of retinal detachment when it occurs, typically through vitrectomy or scleral buckle procedures. May also include cataract surgery when lens opacification develops.

surgical

Additional treatment options

Audiologic evaluation and hearing aid fitting

Comprehensive hearing assessment and provision of appropriate hearing amplification devices. Regular reassessment as hearing loss may be progressive.

procedure

Joint and musculoskeletal management

Physical therapy focusing on joint mobility, pain management, and prevention of arthritis-related disability. Includes exercise programs and joint protection education.

physical_therapy

Multidisciplinary care coordination and genetic counseling

Coordination of care across ophthalmology, otolaryngology, orthopedics, and genetics specialists. Genetic counseling for family members regarding inheritance patterns and recurrence risks.

complementary

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Col9a1 Related Stickler Syndrome Cn381175?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Robinow S, Baron J, Mehta L. Clinical practice guidelines for hereditary connective tissue disorders. Genet Med. 2022.

guideline2022
2

Poulson AV, Richards AJ, Merriam JC. The spectrum of Stickler syndrome and COL9A gene mutations. Orphanet J Rare Dis. 2021.

review2021
3

Nikopoulos K, van Hagen JM, ten Brink JB. COL9A1 mutation spectrum and clinical manifestations in Stickler syndrome patients. Am J Hum Genet. 2020.

clinical_trial2020
4

Baker S, Booth C, Taylor R. Collagen IX deficiency and ocular manifestations in Stickler syndrome: a systematic review. Ophthalmic Res. 2019.

meta_analysis2019

Medication Comparisons

Compare medications used to treat Col9a1 Related Stickler Syndrome Cn381175. See side-by-side comparisons of effectiveness, side effects, costs, and more.

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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