Mode
Text Size
Log in / Sign up
N/A N=812

Prevalence and Characteristics of Transthyretin Amyloidosis in Patients With Left Ventricular Hypertrophy of Unknown Etiology

Transthyretin Amyloidosis Cardiomyopathy (ATTR-CM)

Enrolled (actual)
812
Serious AEs
Results posted
Feb 2024
Primary outcome: Primary: Percentage of Participants With Cardiac Fixation at the Radionuclide Bone Scintigraphy and/or Single Photon Emission Computed Tomography (SPECT): FAS1 — 32.0 Percentage of participants

Study Design & Population

Study type
Observational
Phase
N/A
Interventions
Diagnosis of TTR amyloidosis cardiomyopathy (Diagnostic_test)
Age
Adult, Older Adult · 50+ yrs
Sex
All
Sponsor
Pfizer
Primary completion
Jun 2022

Outcome Measures

OutcomeResultp-value
PRIMARY
Percentage of Participants With Cardiac Fixation at the Radionuclide Bone Scintigraphy and/or Single Photon Emission Computed Tomography (SPECT): FAS1
32.0
SECONDARY
Percentage of Participants With Transthyretin Amyloid (ATTR): FAS 1
17.9
SECONDARY
Percentage of Participants With ATTR or With Suspicion of Monoclonal Gammopathy of Undetermined Significance (MGUS) / Light Chain Amyloidosis (AL): FAS 1
25.2
SECONDARY
Percentage of Participants With Hereditary Transthyretin Amyloid (ATTRv): Full Analysis Set 2 (FAS 2)
6.5
SECONDARY
Percentage of Participants With Hereditary Transthyretin Amyloid (ATTRv): Full Analysis Set 3 (FAS 3)
6.9
SECONDARY
Percentage of Participants With Hereditary Transthyretin Amyloid (ATTRv): FAS 3.1
8.7
SECONDARY
Percentage of Participants With Hereditary Transthyretin Amyloid (ATTRv): FAS 3.2
3.7
SECONDARY
Percentage of Participants With Wild Type Transthyretin Amyloid (ATTRwt): FAS 2
93.5
SECONDARY
Percentage of Participants With Wild Type Transthyretin Amyloid (ATTRwt): FAS 3
93.1
SECONDARY
Percentage of Participants With Wild Type Transthyretin Amyloid (ATTRwt): FAS 3.1
91.3
SECONDARY
Percentage of Participants With Wild Type Transthyretin Amyloid (ATTRwt): FAS 3.2
96.3
SECONDARY
Number of Participants With Transthyretin (TTR) Genetic Mutations Among Those Who Had Positive Scintigraphy: FAS 2
13
SECONDARY
Number of Participants With Transthyretin (TTR) Genetic Mutations Among Those Who Had Positive Scintigraphy: FAS 3
13
SECONDARY
Number of Participants With Transthyretin (TTR) Genetic Mutations Among Those Who Had Positive Scintigraphy: FAS 3.1
11
SECONDARY
Number of Participants With Transthyretin (TTR) Genetic Mutations Among Those Who Had Positive Scintigraphy: FAS 3.2
2
SECONDARY
Percentage of Participants With Any Familial History of Known Cardiomyopathy (CM), Polyneuropathy (PN) or Sudden Cardiac Death (SCD) Among Their Relatives (Parents, Siblings and 2nd /3rd Grade Family): FAS 1
17.1
SECONDARY
Percentage of Participants With Any Familial History of Known Cardiomyopathy (CM), Polyneuropathy (PN) or Sudden Cardiac Death (SCD) Among Their Relatives (Parents, Siblings and 2nd /3rd Grade Family): FAS 2
11.8
SECONDARY
Percentage of Participants With Any Familial History of Known Cardiomyopathy (CM), Polyneuropathy (PN) or Sudden Cardiac Death (SCD) Among Their Relatives (Parents, Siblings and 2nd /3rd Grade Family): FAS 3
9.6
SECONDARY
Percentage of Participants With Any Familial History of Known Cardiomyopathy (CM), Polyneuropathy (PN) or Sudden Cardiac Death (SCD) Among Their Relatives (Parents, Siblings and 2nd /3rd Grade Family): FAS 3.1
10.9
SECONDARY
Percentage of Participants With Any Familial History of Known Cardiomyopathy (CM), Polyneuropathy (PN) or Sudden Cardiac Death (SCD) Among Their Relatives (Parents, Siblings and 2nd /3rd Grade Family): FAS 3.2
7.1
SECONDARY
Percentage of Participants With Senso-Motor Polyneuropathy: FAS 2
80.0
SECONDARY
Percentage of Participants With Senso-Motor Polyneuropathy: FAS 3
86.1
SECONDARY
Percentage of Participants With Senso-Motor Polyneuropathy: FAS 3.1
89.8
SECONDARY
Percentage of Participants With Senso-Motor Polyneuropathy: FAS 3.2
85.7
SECONDARY
Percentage of Participants With Carpal Tunnel Syndrome (CTS): FAS 2
48.6
SECONDARY
Percentage of Participants With Carpal Tunnel Syndrome (CTS): FAS 3
54.8
SECONDARY
Percentage of Participants With Carpal Tunnel Syndrome (CTS): FAS 3.1
60.6
SECONDARY
Percentage of Participants With Carpal Tunnel Syndrome (CTS): FAS 3.2
48.2
SECONDARY
Percentage of Participants With Autonomic Dysfunction: FAS 2
55.9
SECONDARY
Percentage of Participants With Autonomic Dysfunction: FAS 3
58.7
SECONDARY
Percentage of Participants With Autonomic Dysfunction: FAS 3.1
61.3
SECONDARY
Percentage of Participants With Autonomic Dysfunction: FAS 3.2
57.1
SECONDARY
Percentage of Participants With Cardiological Manifestations: FAS 2
98.0
SECONDARY
Percentage of Participants With Cardiological Manifestations: FAS 3
98.1
SECONDARY
Percentage of Participants With Cardiological Manifestations: FAS 3.1
97.8
SECONDARY
Percentage of Participants With Cardiological Manifestations: FAS 3.2
98.2
SECONDARY
Percentage of Participants With Laboratory Abnormalities: FAS 2
37.6; 30.2; 62.9; 81.2; 3.7
SECONDARY
Percentage of Participants With Laboratory Abnormalities: FAS 3
42.3; 33.2; 69.7; 88.9; 3.8
SECONDARY
Percentage of Participants With Laboratory Abnormalities: FAS 3.1
34.3; 34.3; 68.6; 90.5; 4.4
SECONDARY
Percentage of Participants With Laboratory Abnormalities: FAS 3.2
58.9; 35.7; 89.3; 98.2; 1.8
SECONDARY
Number of Participants According to Presence of Neurological Red Flag: FAS1
143; 623
SECONDARY
Number of Participants According to Presence of Neurological Red Flag: FAS 2
142; 103
SECONDARY
Number of Participants According to Discrepancies Between Scintigraphy Result and Single Photon Emission Computed Tomography (SPECT) Result: FAS1
43; 3; 5; 16; 8
SECONDARY
Cardiological Assessments - Blood Pressure: FAS 2
75.6; 132.5
SECONDARY
Cardiological Assessments - Blood Pressure: FAS 3
74.6; 131.0
SECONDARY
Cardiological Assessments - Blood Pressure: FAS 3.1
75.6; 130.9
SECONDARY
Cardiological Assessments - Blood Pressure: FAS 3.2
74.2; 131.9
SECONDARY
Number of Participants According to History of Clinical Parameters at Baseline: FAS 2
78; 167; 89; 156; 184; 61
SECONDARY
Number of Participants According to History of Clinical Parameters at Baseline: FAS 3
77; 131; 88; 120; 162; 46
SECONDARY
Number of Participants According to History of Clinical Parameters at Baseline: FAS 3.1
49; 88; 57; 80; 112; 25
SECONDARY
Number of Participants According to History of Clinical Parameters at Baseline: FAS 3.2
19; 37; 22; 34; 43; 13
SECONDARY
Number of Participants Classified According to New York Heart Association (NYHA) Class: FAS 2
50; 130; 57; 7; 1
SECONDARY
Number of Participants Classified According to New York Heart Association (NYHA) Class: FAS 3
45; 112; 45; 5; 1
SECONDARY
Number of Participants Classified According to New York Heart Association (NYHA) Class: FAS 3.1
34; 69; 30; 3; 1
SECONDARY
Number of Participants Classified According to New York Heart Association (NYHA) Class: FAS 3.2
5; 38; 11; 2
SECONDARY
Number of Participants With Atrial Fibrillation Assessment: FAS 2
120; 90; 35
SECONDARY
Number of Participants With Atrial Fibrillation Assessment: FAS 3
105; 78; 25
SECONDARY
Number of Participants With Atrial Fibrillation Assessment: FAS 3.1
65; 52; 20
SECONDARY
Number of Participants With Atrial Fibrillation Assessment: FAS 3.2
28; 23; 5
SECONDARY
Number of Participants With Pacemaker and Implantable Cardiac Defibrillator (ICD): FAS 2
30; 215; 0; 245
SECONDARY
Number of Participants With Pacemaker and Implantable Cardiac Defibrillator (ICD): FAS 3
30; 178; 0; 208
SECONDARY
Number of Participants With Pacemaker and Implantable Cardiac Defibrillator (ICD): FAS 3.1
20; 117; 0; 137
SECONDARY
Number of Participants With Pacemaker and Implantable Cardiac Defibrillator (ICD): FAS 3.2
7; 49; 0; 56
SECONDARY
Number of Participants With Magnetic Resonance Imaging (MRI) Scan Performed Using Late Gadolinium Enhancement (LGE): FAS 2
11; 55
SECONDARY
Number of Participants With Magnetic Resonance Imaging (MRI) Scan Performed Using Late Gadolinium Enhancement (LGE): FAS 3
7; 50
SECONDARY
Number of Participants With Magnetic Resonance Imaging (MRI) Scan Performed Using Late Gadolinium Enhancement (LGE): FAS 3.1
6; 33
SECONDARY
Number of Participants With Magnetic Resonance Imaging (MRI) Scan Performed Using Late Gadolinium Enhancement (LGE): FAS 3.2
0; 13
SECONDARY
Number of Participants According to Assessment for Electrocardiogram (ECG) Paced: FAS 2
217; 18
SECONDARY
Number of Participants According to Assessment for Electrocardiogram (ECG) Paced: FAS 3
182; 18
SECONDARY
Number of Participants According to Assessment for Electrocardiogram (ECG) Paced: FAS 3.1
122; 10
SECONDARY
Number of Participants According to Assessment for Electrocardiogram (ECG) Paced: FAS 3.2
49; 6
SECONDARY
Heart Rate Parameter for Participants Without Paced: FAS 2
73.3
SECONDARY
Heart Rate Parameter for Participants Without Paced: FAS 3
73.2
SECONDARY
Heart Rate Parameter for Participants Without Paced: FAS 3.1
73.4
SECONDARY
Heart Rate Parameter for Participants Without Paced: FAS 3.2
72.7
SECONDARY
Number of Participants Assessed for Sinus Rhythm Parameter for Participants Without Paced: FAS 2
86; 135; 6
SECONDARY
Number of Participants Assessed for Sinus Rhythm Parameter for Participants Without Paced: FAS 3
72; 114; 4
SECONDARY
Number of Participants Assessed for Sinus Rhythm Parameter for Participants Without Paced: FAS 3.1
51; 73; 3
SECONDARY
Number of Participants Assessed for Sinus Rhythm Parameter for Participants Without Paced: FAS 3.2
18; 32; 0
SECONDARY
Sokolow Index: FAS 2
19.1
SECONDARY
Sokolow Index: FAS 3
18.7
SECONDARY
Sokolow Index: FAS 3.1
19.8
SECONDARY
Sokolow Index: FAS 3.2
16.5
SECONDARY
Left Ventricular Ejection Fraction (LVEF): FAS 2
55.0
SECONDARY
Left Ventricular Ejection Fraction (LVEF): FAS 3
55.2
SECONDARY
Left Ventricular Ejection Fraction (LVEF): FAS 3.1
55.7
SECONDARY
Left Ventricular Ejection Fraction (LVEF): FAS 3.2
53.9
SECONDARY
Number of Participants Assessed for Left Ventricular Outflow Tract Obstruction (LVOT): FAS 2
215; 26
SECONDARY
Number of Participants Assessed for Left Ventricular Outflow Tract Obstruction (LVOT): FAS 3
183; 22
SECONDARY
Number of Participants Assessed for Left Ventricular Outflow Tract Obstruction (LVOT): FAS 3.1
119; 17
SECONDARY
Number of Participants Assessed for Left Ventricular Outflow Tract Obstruction (LVOT): FAS 3.2
51; 5
SECONDARY
Number of Participants Categorized According to Perseverance of Strain Apical: FAS 2
28; 62
SECONDARY
Number of Participants Categorized According to Perseverance of Strain Apical: FAS 3
26; 60
SECONDARY
Number of Participants Categorized According to Perseverance of Strain Apical: FAS 3.1
16; 46
SECONDARY
Number of Participants Categorized According to Perseverance of Strain Apical: FAS 3.2
8; 12
SECONDARY
LV End Diastolic Diameter: FAS 2
43.3
SECONDARY
LV End Diastolic Diameter: FAS 3
43.2
SECONDARY
LV End Diastolic Diameter: FAS 3.1
43.2
SECONDARY
LV End Diastolic Diameter: FAS 3.2
44.4
SECONDARY
Maximum Wall Thickness: FAS 2
17.4
SECONDARY
Maximum Wall Thickness: FAS 3
17.5
SECONDARY
Maximum Wall Thickness: FAS 3.1
17.9
SECONDARY
Maximum Wall Thickness: FAS 3.2
16.9
SECONDARY
Number of Participants According to Type of Hypertrophic Pattern: FAS 2
6; 179; 47; 8
SECONDARY
Number of Participants According to Type of Hypertrophic Pattern: FAS 3
4; 159; 37; 4
SECONDARY
Number of Participants According to Type of Hypertrophic Pattern: FAS 3.1
1; 105; 27; 2
SECONDARY
Number of Participants According to Type of Hypertrophic Pattern: FAS 3.2
2; 46; 7; 1
SECONDARY
LV Mass Index (LVMI): FAS 2
172.7
SECONDARY
LV Mass Index (LVMI): FAS 3
177.0
SECONDARY
LV Mass Index (LVMI): FAS 3.1
177.0
SECONDARY
LV Mass Index (LVMI): FAS 3.2
185.5
SECONDARY
Aortic Valvular Stenosis - Aortic Valve Area: FAS 2
2.3
SECONDARY
Aortic Valvular Stenosis - Aortic Valve Area: FAS 3
2.2
SECONDARY
Aortic Valvular Stenosis - Aortic Valve Area: FAS 3.1
2.3
SECONDARY
Aortic Valvular Stenosis - Aortic Valve Area: FAS 3.2
2.0

Summary

The main purpose of this study is to determine the prevalence of ATTR Cardiomyopathy among patients admitted due to Left Ventricular Hypertrophy (LVH) >15mm of unknown etiology by using a 99mTc-tracer scintigraphy based protocol

Eligibility Criteria

Inclusion criteria

  • Patient signed inform consent.
  • Males and Females.
  • Age ≥50 years.
  • Left ventricular hypertrophy (LVH) defined as end-diastolic LV maximum wall thickness (MWT) ≥15mm in Echocardiogram.
  • Plan to undergo or recently underwent radionuclide bone scintigraphy and/or SPECT with any of the following radio labelled tracers: 99mTc-DPD or 99mTc-PYP or 99mTc-HMDP.

Exclusion criteria

  • Etiological diagnosis explaining the LVH (p.e. Sarcomeric HCM, Myeloma, Fabry disease, Sarcoidosis, Any type of amyloidosis (AA, AL, TTR)
  • Severe aortic stenosis defined as aortic valve area (AVA) < 1.0 cm2
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03842163). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

Back to search