A Multi-center Cardiac PYP Scan Registry in Taiwan.

Heart Failure Clinical Trial

Official title:

A Multi-center Registry for Clinical Information and 99m Tc-pyrophosphate Scintigraphy in Patients With Suspected Cardiac Amyloidosis in Taiwan.

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT05593679
• Other study ID #: 111229-E
• Status: Not yet recruiting
• Start date: November 1, 2022
• Est. completion date: December 31, 2027

Study information

• Verified date: October 2022
• Source: Far Eastern Memorial Hospital
• Contact: Yen-Wen Wu
• Phone: 886-2-8966-7000
• Email: wuyw0502[@]gmail.com
• Is FDA regulated: No
• Study type: Observational [Patient Registry]

Clinical Trial Summary

Amyloid deposition in the heart is called cardiac amyloidosis (CA); 95% is immunoglobulin light chain amyloidosis (AL) and transthyretin amyloidosis (ATTR). Hereditary (ATTRm) or wild-type (ATTRwt) depends on whether the ATTRm gene is mutated or not. The most common mutation in Taiwan is A97S, 80% have left ventricular hypertrophy. The good prognosis depends on early diagnosis and correct treatment strategy.

Bone-avid tracers such as 99mTc-PYP/DPD/HMDP could detect CA. The mechanism is not clear yet, which may be related to the microcalcification. AL amyloidosis is mostly between visual score grade 0-2, and ATTR-CM is usually grade≥2 on PYP scan, or heart to contralateral (H/CL) ratio, and it might replace invasive myocardial biopsy. However, there are no large-scale clinical studies, lack of standardization data, and limited information in comparison between clinical and imaging parameters.

This project will enroll patients with suspected or diagnosed with CA according to CA diagnostic algorithm. Clinical data and image parameters are collected and compared. The project aims to set up prediction models based on the multi-parameters of PYP scan using artificial intelligence technology, including imaging registration and alignment technology, and standardization. We further use the key cardiovascular data elements and imaging-derived database using model training network to extract image features to develop the diagnostic and prognostic prediction models, which are expected to validate the clinical significance and improve patient-centric performance and efficient clinical decision making.

Description:

We will retrospectively and prospectively collect total PYP scans that had been performed on suspected or diagnosed ATTR-CM patients in medical centers in Taiwan and follow-up at least 1 year. All patients are enrolled based on clinical suspicions such as "red-flag" signs using ultrasound, NT-pro BNP and clinical data according to the diagnostic algorithms. In patients with Grade 2 and 3 PYP myocardial uptake, genetic testing is arranged, serum and urine AL tests results will be confirmed. Before reading, the imaging quality will be evaluated (good quality, fair but interpretable, poor but interpretable, poor and insufficient for interpretation). All the images will be visually graded by experienced nuclear medicine physicians with consensus. It helps understand the real-world data.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 2000
• Est. completion date: December 31, 2027
• Est. primary completion date: August 29, 2027
• Accepts healthy volunteers: No
• Gender: All
• Age group: 20 Years and older

Eligibility

Inclusion Criteria:

1. = 20 years of age

2. Documented diagnosis or r/o of ATTR amyloidosis

Exclusion Criteria:

1. Pregnant or nursing (lactating) women.

2. Important systemic diseases (except heart disease or neurological diseases) such as liver cirrhosis, active malignant tumors, etc., with a life expectancy of less than 6 months.

3. Patient who refused clinical follow up.

Related Conditions & MeSH terms

• Amyloidosis
• Cardiac Amyloidosis
• Heart Failure

Intervention

Diagnostic Test:
• Tc-99m PYP Cardiac scan
Tc-99m PYP Cardiac scan

Locations

Country	Name	City	State
Taiwan	Far Eastern Memorial Hospital	New Taipei City

Sponsors (1)

Lead Sponsor	Collaborator
Far Eastern Memorial Hospital

Country where clinical trial is conducted

Taiwan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Death	Death	1 year
Secondary	CV death	CV death	1 year
Secondary	Hospitalization for heart failure	Hospitalization for heart failure	1 year