Cochrane · systematic review · CD012395

Pharmacological treatment for familial amyloid polyneuropathy

Magrinelli, F, Fabrizi, GM, Santoro, L, et al. · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

NeuromuscularAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
25
current version
GRADE rated
23
No studies
2
Included studies
NR
No studies 2 · 8%Ungraded 0 · 0%Very low 9 · 36%Low 11 · 44%Moderate 3 · 12%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Tafamidis compared to placebo for people with transthyretin‐familial amyloid polyneuropathy (TTR‐FAP)

Population: people with early‐stage TTR‐FAP
6 questions
OutcomeEffectEvidenceStatus / GRADE
Disability due to FAP progression Not measured
Tafamidis vs placebo
no estimate extractedNRNo studies
Severity of peripheral neuropathy (expressed as the change in NIS‐LL) Scale from: 0 (normal) to 88 (total impairment)
Tafamidis vs placebo
no estimate extracted1 study · 125 participantsLow
Downgraded: risk of bias, imprecision
Quality of life (expressed as the change in 35‐Item Norfolk QOL‐DN total score) Scale from: ‐2 (best possible quality of life) to 138 (worst possible quality of life)
Tafamidis vs placebo
no estimate extracted1 study · 125 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Number of participants who died during the trial
Tafamidis vs placebo
RR 0.65 [0.11, 3.74]1 study · 128 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Number of dropouts due to adverse events
Tafamidis vs placebo
RR 1.29 [0.3, 5.54]1 study · 128 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Number of participants experiencing at least one severe adverse event
Tafamidis vs placebo
RR 1.16 [0.37, 3.62]1 study · 128 participantsVery low
Downgraded: risk of bias, imprecision, indirectness

Diflunisal compared to placebo for people with transthyretin‐familial amyloid polyneuropathy (TTR‐FAP)

Population: people with TTR‐FAP
7 questions
OutcomeEffectEvidenceStatus / GRADE
Disability due to FAP progression (expressed as the change in Kumamoto Score) Scale from: 0 (normal) to 102 (worst disease severity).
Diflunisal vs placebo
no estimate extracted1 study · 130 participantsLow
Downgraded: risk of bias, imprecision
Severity of peripheral neuropathy (expressed as the change in NIS+7) Scale from: 0 (normal) to 270 (total impairment)
Diflunisal vs placebo
no estimate extracted1 study · 130 participantsLow
Downgraded: risk of bias, imprecision
Quality of life (expressed as the change in SF‐36 physical component score) Scale from: 0 (worst possible quality of life) to 100 (best possible quality of life)
Diflunisal vs placebo
no estimate extracted1 study · 130 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Quality of life (expressed as the change in SF‐36 mental component score) Scale from: 0 (worst possible quality of life) to 100 (best possible quality of life).
Diflunisal vs placebo
no estimate extracted1 study · 130 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Number of participants who died during the trial
Diflunisal vs placebo
RR 0.46 [0.15, 1.41]1 study · 130 participantsVery low
Downgraded: risk of bias, imprecision
Number of dropouts due to adverse events
Diflunisal vs placebo
RR 2.06 [0.39, 10.87]1 study · 130 participantsVery low
Downgraded: risk of bias, imprecision
Number of participants experiencing at least one severe adverse event
Diflunisal vs placebo
RR 0.77 [0.18, 3.32]1 study · 130 participantsVery low
Downgraded: risk of bias, imprecision

Patisiran compared to placebo for people with transthyretin‐familial amyloid polyneuropathy (TTR‐FAP)

Population: people with TTR‐FAP
6 questions
OutcomeEffectEvidenceStatus / GRADE
Disability due to FAP progression (expressed as the change in R‐ODS) Scale from: 0 (worst disability) to 48 (normal)
Patisiran vs placebo
no estimate extracted1 study · 225 participantsModerate
Downgraded: imprecision
Severity of peripheral neuropathy (expressed as the change in mNIS+7ALN) Scale from: 0 (normal) to 304 (total impairment)
Patisiran vs placebo
no estimate extracted1 study · 225 participantsModerate
Downgraded: imprecision
Quality of life (expressed as the change in 35‐Item Norfolk QOL‐DN total score) Scale from: ‐4 (best possible quality of life) to 136 (worst possible quality of life)
Patisiran vs placebo
no estimate extracted1 study · 225 participantsLow
Downgraded: imprecision, indirectness
Number of participants who died during the trial
Patisiran vs placebo
RR 0.61 [0.21, 1.74]1 study · 225 participantsLow
Downgraded: imprecision
Number of dropouts due to adverse events
Patisiran vs placebo
RR 0.33 [0.13, 0.82]1 study · 225 participantsLow
Downgraded: imprecision
Number of participants experiencing at least one severe adverse event
Patisiran vs placebo
RR 0.91 [0.64, 1.28]1 study · 225 participantsLow
Downgraded: imprecision

Inotersen compared to placebo for people with transthyretin‐familial amyloid polyneuropathy (TTR‐FAP)

Population: people with TTR‐FAP
6 questions
OutcomeEffectEvidenceStatus / GRADE
Disability due to FAP progression Not measured
Inotersen vs placebo
no estimate extractedNRNo studies
Severity of peripheral neuropathy (expressed as the change in mNIS+7Ionis) Scale from: ‐22.3 (normal) to 346.3 (total impairment)
Inotersen vs placebo
no estimate extracted1 study · 172 participantsModerate
Downgraded: imprecision
Quality of life (expressed as the change in 35‐Item Norfolk QOL‐DN total score) Scale from: ‐4 (best possible quality of life) to 136 (worst possible quality of life)
Inotersen vs placebo
no estimate extracted1 study · 172 participantsLow
Downgraded: imprecision, indirectness
Number of participants who died during the trial
Inotersen vs placebo
RR 5.94 [0.33, 105.6]1 study · 172 participantsLow
Downgraded: imprecision
Number of dropouts due to adverse events
Inotersen vs placebo
RR 8.57 [1.16, 63.07]1 study · 172 participantsLow
Downgraded: imprecision
Number of participants experiencing at least one severe adverse event
Inotersen vs placebo
RR 1.48 [0.85, 2.57]1 study · 172 participantsLow
Downgraded: imprecision