Application of High Resolution Optical Coherence Tomography in Skin Disease: Amyloidosis and Differential Diagnosis

April 26, 2021 updated by: Taipei Veterans General Hospital, Taiwan

Amyloidosis is caused by the misfolding protein accumulated in tissue, which affects the function of the organs. In addition to the primary cutaneous amyloidosis, a skin lesion may also appear in another classification - systemic amyloidosis. Physicians can confirm diagnosis of the above classification by skin biopsy.

Primary cutaneous amyloidosis is common in Asia and South America. In Taiwan, 80 people are diagnosed with primary cutaneous amyloidosis in every 100,000 people. Among the disease, macular amyloidosis and lichen amyloidosis are the most common subtypes. Primary cutaneous amyloidosis can cause severe itching, pigmentation, and skin keratosis, and further affect the social behavior of patients. The etiology of primary cutaneous amyloidosis is currently unclear, possibly due to genetic variations or viral infection. Typical primary cutaneous amyloidosis can be diagnosed by clinical manifestations, however, if the location or appearance of a lesion is atypical, the disease will be indistinguishable from other pigmented diseases, and further need a biopsy. If physicians can use a rapider and more accurate assistance tool to evaluate disease first, it will improve the accuracy of clinical diagnosis, relieve patient of suffering from biopsy, and further use medical resources more effectively.

Optical coherence tomography (OCT) is a kind of optical imaging medical system. It generates images by detecting the variations in refractive indexes of the various components in soft tissues. Apollo Medical Optics, Ltd. (AMO)'s OCT device (ApolloVue™ S100 image system, Viper1-S003) acquires real-time in vivo skin tissue tomograms with cellular resolution which provides a non-invasive, non-radioactive and rapid image acquisition.

In this study, AMO's OCT will be used to observe features in tomograms of primary cutaneous amyloidosis and that of other indistinguishable diseases, compare the correspondence of tomograms with pathological sections, induct features in tomograms specific to primary cutaneous amyloidosis and other indistinguishable diseases, and further establish an OCT database of primary cutaneous amyloidosis.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

50

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Taiwan
    • Beitou District
      • Taipei City, Beitou District, Taiwan, 11217
        • Taipei Veterans General Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

The population from experimental group will be selected.

Description

Inclusion Criteria:

  • Patients diagnosed with suspected primary cutaneous amyloidosis and other indistinguishable diseases
  • Patients with no open wounds

Exclusion Criteria:

  • Patients with a transcutaneous infectious disease
  • Patients under the age of 20
  • Vulnerable populations, including: pregnant women, handicapped, and homelessness
  • Patient cannot cooperate in examination

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Experimental
Patients with amyloidosis and other indistinguishable diseases
Device: ApolloVue™ S100 image system, Viper1-S003
The device is an in vivo non-invasive optical coherence tomography and will be used to obtain at least 6 medical images of normal and lesional skin, respectively, for experimental group.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of subjects with clear tissue characteristics of amyloidosis and/or other pigmented diseases in tomograms
Time Frame: 1 year
Number of subjects with clear tissue characteristics of tomograms will be compared to that with unclear tissue characteristics to identify the effect of the OCT on scanning amyloidosis and other pigmented diseases at study completion.
1 year
Number of subjects with the distinction between skin lesion and normal skin in tomograms
Time Frame: 1 year
Number of subjects with the distinction between skin lesion and normal skin in tomograms will be compared to that with no distinction to verify the specific diseases that can be distinguished from normal skin by the OCT at study completion.
1 year

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of subjects with the distinction between amyloidosis and other pigmented diseases in tomograms
Time Frame: 1 year
Number of subjects with the distinction between amyloidosis and other pigmented diseases in tomograms will be compared to that with no distinction to verify the effect of the OCT on distinguishing amyloidosis from other pigmented diseases at study completion.
1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Taipei Veterans General Hospital, Taiwan

Collaborators

Apollo Medical Optics, Ltd

Investigators

  • Principal Investigator: Ding-Dar Lee, M.D., Ph. D., Taipei Veterans General Hospital, Taiwan

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 8, 2019

Primary Completion (Actual)

December 19, 2019

Study Completion (Actual)

December 19, 2019

Study Registration Dates

First Submitted

August 22, 2019

First Submitted That Met QC Criteria

August 22, 2019

First Posted (Actual)

August 28, 2019

Study Record Updates

Last Update Posted (Actual)

April 27, 2021

Last Update Submitted That Met QC Criteria

April 26, 2021

Last Verified

April 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2018-10-019A

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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