Sensory abnormalities such as dysesthesia, typically in a glove and stocking distribution, and neuropathic pain are common both in AL and ATTR, while the association between HCM phenotype and bilateral carpal tunnel syndrome is more suggestive of transthyretin-related amyloidosis, which may precede cardiac symptoms by 10–15 years [7]. The gene discussed is TTR; the disease is axial length measurement.