How Patients Adapt to Progressive hATTR Polyneuropathy

Key Takeaways:

• As hATTR-PN progresses, patients may develop foot drop, impaired balance, loss of protective sensation, and difficulty using their hands, leading to progressive loss of independence.
• For patients, slowing disease progression means preserving the ability to walk, perform daily activities, and remain independent for as long as possible.
• Supportive care, including physical therapy, fall prevention, and assistive devices, complements disease-modifying therapy and helps patients maintain function.

Neurologists follow disease progression using measures of strength, sensation, gait, and balance. For patients, however, progression is experienced through increasing difficulty walking, climbing stairs, opening jars, or performing other everyday activities. Understanding that functional impact helps place neurologic examination findings into clinical context.

From foot drop to falls

The motor and sensory losses patients describe track the recognized natural history of the disease, which advances from a sensory neuropathy in an ambulatory patient (familial amyloid polyneuropathy, FAP, stage 1) to a sensorimotor neuropathy requiring walking assistance (stage 2) and ultimately to a wheelchair- or bed-bound state (stage 3).¹

Patients often describe this progression in practical terms. One patient described progressive foot drop, explaining that he "can't seem to keep his foot up enough not to flop," along with persistent numbness in his feet.²

Loss of proprioception and sensory feedback contributes to impaired balance and falls. One patient described "lack of feeling" in his feet, making it difficult to know where his feet were while walking. These experiences mirror findings from interview studies in which difficulty walking and impaired balance were among the most commonly reported symptoms.^2,3

When hands stop cooperating

Upper extremity involvement can also interfere with daily activities requiring grip strength and dexterity. Sensory symptoms may also make everyday tasks uncomfortable. One patient recalled that drying off with a towel felt "like sandpaper."^3,4

These symptoms can also affect employment. In one interview study, 11 of 14 patients reported that hATTR-PN had affected their ability to work.^3,4

What progression costs

Quality-of-life scores decline as disease severity increases, reflecting the growing impact of hATTR-PN on mobility, independence, and daily functioning. Progression, in other words, is not a line on a chart. It is the sequential subtraction of the activities that define an independent life.^3,5

Independence as the goal

When patients name their priority, it is rarely a symptom score. "To not be a burden on my family is my number one goal," one patient writes; "I must remain independent.”²

Preserving independence is therefore a major goal of treatment. Disease-modifying therapies aim to slow progression, while supportive care including physical therapy, fall prevention, and appropriate assistive devices helps patients maintain mobility and function.

One patient described using a custom cane as a "third leg" after developing foot drop and balance difficulties. Patient education resources similarly emphasize physical therapy, balance training, and appropriate use of canes or walkers to reduce falls.²

In practice, management of hATTR-PN extends beyond prescribing disease-modifying therapy. Regular assessment of gait, balance, fall risk, and hand function can help identify patients who may benefit from rehabilitation services and additional supportive interventions.