NCT05446506

Brief Summary

BPPV is the most common cause of vertigo. The pathophysiology of BPPV has not been cleared, several studies show that symptoms are caused by the displacement of otoconia from the macula of the utricle into the semicircular canals. These calcium carbonate particles then stimulate non-physiological movement of the endolymph leading to a false sensation of angular acceleration. Biomarkers represent measurable products of biological processes, thus making an assessment of those processes more practical. Biomarkers in circulation are powerful indicators of normal and pathological biological processes, as well as, responses to pharmacological treatments. The inner ear-inclusive protein that has been published included Otolin-1, Otoconin-90/95, Prestin, Otoancorin, Otogelin, α-tectorin, β-tectorin and Cochlin.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
21

participants targeted

Target at below P25 for all trials

Timeline
Completed

Started Jan 2021

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 13, 2021

Completed
1.2 years until next milestone

First Submitted

Initial submission to the registry

April 12, 2022

Completed
3 months until next milestone

First Posted

Study publicly available on registry

July 6, 2022

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 30, 2022

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

February 28, 2023

Completed
Last Updated

August 31, 2023

Status Verified

August 1, 2023

Enrollment Period

1.7 years

First QC Date

April 12, 2022

Last Update Submit

August 29, 2023

Conditions

Keywords

otolin-1vitamin Dbiomarkerinner ear

Outcome Measures

Primary Outcomes (1)

  • Level of serum otolin-1 and vitamin D

    changes of Level of serum otolin-1 and vitamin D before and after treatment of BPPV

    Day 0 and 7±3days after treatment

Secondary Outcomes (1)

  • Correlation of serum otolin-1 and vitamin D

    Day 0 and 7±3days after treatment

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

BPPV cases in outpatient Ear Nose and Throat (ENT) Clinic at CMU Hospital, Faculty of Medicine, Chiang Mai University during the study period.

You may qualify if:

  • Age 18 - 80 years
  • History of brief episodes of positioning vertigo
  • Positive positioning test; either Dix-Hallpike test or supine roll test in one or both ears
  • First diagnosis of BPPV or recurrent BPPV

You may not qualify if:

  • Clinical symptoms or sign of other central or peripheral vestibular disorder
  • Previous history of balance disorders (for controlled group) or Previous history of balance disorders except BPPV (for BPPV group)
  • Active infection
  • Active cancer disease
  • Conditions that may affect the level of otolin-1 such as previous mastoidectomy
  • Conditions that may affect the level of vitamin D such as cardiovascular disease, diabetes mellitus type2, chronic liver disease, osteoporosis osteomalacia and active symptoms of migraine
  • Major health conditions; except common chronic conditions e.g. hypertension, hypothyroidism, hypercholesterolemia, and reflux
  • Major systemic illness, were undergoing active cancer treatment, took prednisone above 10 mg daily, took other immunosuppressive drugs, took any medications for rheumatoid arthritis other than NSAIDs, or had received antibiotics in the previous 6 months
  • Unable to complete Thai-Dizziness handicap inventory questionnaire
  • Unable to obtain the blood specimen

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Department of Otolaryngology Faculty of Medicine, Chiang Mai University 110 Intawaroros Road, Sriphum

Chiang Mai, 50200, Thailand

Location

Related Publications (10)

  • Parham K, Sacks D, Bixby C, Fall P. Inner ear protein as a biomarker in circulation? Otolaryngol Head Neck Surg. 2014 Dec;151(6):1038-40. doi: 10.1177/0194599814551127. Epub 2014 Sep 22.

  • Isaradisaikul S, Navacharoen N, Hanprasertpong C, Kangsanarak J, Panyathong R. Causes and time-course of vertigo in an ear, nose, and throat clinic. Eur Arch Otorhinolaryngol. 2010 Dec;267(12):1837-41. doi: 10.1007/s00405-010-1309-9. Epub 2010 Jun 22.

  • Lynn S, Pool A, Rose D, Brey R, Suman V. Randomized trial of the canalith repositioning procedure. Otolaryngol Head Neck Surg. 1995 Dec;113(6):712-20. doi: 10.1016/S0194-59989570010-2.

  • Burton MJ, Eby TL, Rosenfeld RM. Extracts from the Cochrane Library: modifications of the Epley (canalith repositioning) maneuver for posterior canal benign paroxysmal positional vertigo. Otolaryngol Head Neck Surg. 2012 Sep;147(3):407-11. doi: 10.1177/0194599812457134. Epub 2012 Aug 11.

  • Bhattacharyya N, Gubbels SP, Schwartz SR, Edlow JA, El-Kashlan H, Fife T, Holmberg JM, Mahoney K, Hollingsworth DB, Roberts R, Seidman MD, Prasaad Steiner RW, Tsai Do B, Voelker CC, Waguespack RW, Corrigan MD. Clinical Practice Guideline: Benign Paroxysmal Positional Vertigo (Update) Executive Summary. Otolaryngol Head Neck Surg. 2017 Mar;156(3):403-416. doi: 10.1177/0194599816689660.

  • Mulry E, Parham K. Inner Ear Proteins as Potential Biomarkers. Otol Neurotol. 2020 Feb;41(2):145-152. doi: 10.1097/MAO.0000000000002466.

  • Sacks D, Parham K. Preliminary Report on the Investigation of the Association Between BPPV and Osteoporosis Using Biomarkers. Otol Neurotol. 2015 Sep;36(9):1532-6. doi: 10.1097/MAO.0000000000000853.

  • Koestner A, Long JF. Ultrastructure of canine distemper virus in explant tissue cultures of canine cerebellum. Lab Invest. 1970 Aug;23(2):196-201. No abstract available.

  • Parham K, Kuchel GA, McElhaney JE, Haynes L. A Relationship Between Blood Levels of Otolin-1 and Vitamin D. Otol Neurotol. 2018 Apr;39(4):e269-e273. doi: 10.1097/MAO.0000000000001747.

  • Wu Y, Han W, Yan W, Lu X, Zhou M, Li L, Guan Q, Fan Z. Increased Otolin-1 in Serum as a Potential Biomarker for Idiopathic Benign Paroxysmal Positional Vertigo Episodes. Front Neurol. 2020 May 13;11:367. doi: 10.3389/fneur.2020.00367. eCollection 2020.

MeSH Terms

Conditions

Benign Paroxysmal Positional Vertigo

Condition Hierarchy (Ancestors)

VertigoVestibular DiseasesLabyrinth DiseasesEar DiseasesOtorhinolaryngologic DiseasesNeurologic ManifestationsNervous System DiseasesSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Suwicha Kaewsiri, MD

    Department of Otolaryngology , Faculty of Medicine, Chiang Mai University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Clinical Professor, Department of Otolaryngology

Study Record Dates

First Submitted

April 12, 2022

First Posted

July 6, 2022

Study Start

January 13, 2021

Primary Completion

September 30, 2022

Study Completion

February 28, 2023

Last Updated

August 31, 2023

Record last verified: 2023-08

Data Sharing

IPD Sharing
Will not share

Locations