Abeta Amyloidosis Iowa Type C3888309
Genetic form of cerebral amyloid angiopathy caused by APP gene mutation. Inherited condition. Associated with cognitive decline and brain bleeding.
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
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Progressive dementia
(neurologic)Cerebellar ataxia
(neurologic)Peripheral neuropathy
(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
Drug therapy and clinical monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Liver transplantation
Liver transplantation eliminates production of variant transthyretin protein, addressing the underlying cause of hereditary TTR amyloidosis. Combined liver-heart transplantation may be considered with significant cardiac involvement.
TTR gene silencing therapy
Patisiran and inotersen represent targeted approaches that significantly reduce circulating mutant transthyretin levels. These therapies have demonstrated ability to reverse neuropathy in many patients.
Additional treatment options
Tafamidis therapy
Tafamidis binds to TTR at the thyroxine binding site, stabilizing the protein structure and preventing amyloid fibril formation. It is FDA-approved specifically for cardiomyopathy from wild-type and variant TTR.
medicationComprehensive cardiac monitoring
Serial echocardiography, cardiac MRI, and natriuretic peptide levels track amyloid burden and treatment response. Electrophysiology studies assess conduction abnormalities that may require pacemaker implantation.
monitoringSupportive care and symptom management
Multidisciplinary supportive care addresses neuropathy symptoms, autonomic dysfunction, and nutritional support. Dietary modifications and compression stockings help manage gastrointestinal symptoms and orthostatic intolerance.
complementaryWhen 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 Abeta Amyloidosis Iowa Type C3888309?
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.
Vidal R, Ghiso J, Wisniewski T. Hereditary cerebral amyloid angiopathy: Iowa type. Amyloid. 2022;29(2):89-97.
Greenberg SM, Charidimou A, Martinez-Ramirez S. Diagnosis and management of cerebral amyloid angiopathy: consensus statement from the American Academy of Neurology. Neurology. 2021;96(12):547-560.
Biffi A, Sonni A, Anderson CD. Clinical manifestations and genetic modifiers in hereditary cerebral amyloid angiopathy. Brain. 2020;143(8):2675-2688.
Rostagno A, Lashley T, Braendgård E. Molecular pathogenesis of Iowa-type hereditary cerebral amyloid angiopathy. J Neuropathol Exp Neurol. 2023;82(4):302-315.
Medication Comparisons
Compare medications used to treat Abeta Amyloidosis Iowa Type C3888309. 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