Molecular Identification of Transthyretin Amyloid in Fixed Skin Biopsies: A Simplified Sample Preparation Method

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18 Oct 2026 0 comments

Hereditary transthyretin (TTR) amyloidosis (ATTRv) is associated with peripheral neuropathy resulting from the accumulation of fibrillar TTR amyloid deposits in tissues including peripheral nerves and skin. Accurate diagnosis requires molecular identification of amyloid deposits in tissue specimens. Skin punch biopsy is a minimally invasive, well-established diagnostic tool used to confirm small-fiber neuropathy. Congo-red (CR) staining confirms amyloid deposition but does not determine amyloid...