NCT03437824

Brief Summary

In this study, the investigators aim to assess if vitamin B12 treatment demonstrates a beneficial effect on voice performance. If so, they wish to examine the relationship between the vitamin B12 treatment and the study participant's general well-being.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
20

participants targeted

Target at P25-P50 for early_phase_1

Timeline
Completed

Started Oct 2017

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

First Submitted

Initial submission to the registry

July 2, 2017

Completed
3 months until next milestone

Study Start

First participant enrolled

October 1, 2017

Completed
5 months until next milestone

First Posted

Study publicly available on registry

February 19, 2018

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2019

Completed
Last Updated

April 9, 2019

Status Verified

April 1, 2019

Enrollment Period

1.5 years

First QC Date

July 2, 2017

Last Update Submit

April 5, 2019

Conditions

Outcome Measures

Primary Outcomes (5)

  • Evaluation of the Ability to Sing Easily (EASE) - Change

    1 = Not at All, 2 = Mildly, 3 = Moderately, 4 = Extremely

    Baseline, 1 Hr Post-Injection, 3 Hrs Post-Injection, 24 Hrs Post-Injection, 72 Hrs Post-Injection, 1 Wk Post-Injection

  • Singing Voice Handicap Index-10 (SVHI-10) - Change

    0 = Never, 1 = Almost Never, 2 = Sometimes, 3 = Almost Always, 4 = Always

    Baseline, 1 Hr Post-Injection, 3 Hrs Post-Injection, 24 Hrs Post-Injection, 72 Hrs Post-Injection, 1 Wk Post-Injection

  • 0-10 Visual Analog Scale (VAS) - Change

    The scale asks, "How confident are you that your voice will do what you need it to do right now?"; 0 = Not Confident At All, 10 = Extremely Confident

    Baseline, 1 Hr Post-Injection, 3 Hrs Post-Injection, 24 Hrs Post-Injection, 72 Hrs Post-Injection, 1 Wk Post-Injection

  • Vocal Fold Swelling (Bastian et al., 2009) - Change

    Happy Birthday, Staccato, Trill; 1 = Poor, 5 = Average, 10 = Excellent

    Baseline, 1 Hr Post-Injection, 3 Hrs Post-Injection, 24 Hrs Post-Injection, 72 Hrs Post-Injection, 1 Wk Post-Injection

  • Voice Fatigue Index (VFI) - Change

    0 = Never, 1 = Almost Never, 2 = Sometimes, 3 = Almost Always, 4 = Always

    Baseline, 1 Hr Post-Injection, 3 Hrs Post-Injection, 24 Hrs Post-Injection, 72 Hrs Post-Injection, 1 Wk Post-Injection

Secondary Outcomes (2)

  • Short Warwick-Edinburgh Mental Wellbeing Scale (SWEMWBS) - Change

    Baseline, 1 Hr Post-Injection, 3 Hrs Post-Injection, 24 Hrs Post-Injection, 72 Hrs Post-Injection, 1 Wk Post-Injection

  • Patients Health Questionnaire-9 for Depression - Change

    Baseline, 1 Hr Post-Injection, 3 Hrs Post-Injection, 24 Hrs Post-Injection, 72 Hrs Post-Injection, 1 Wk Post-Injection

Study Arms (2)

Cyanocobalamin

EXPERIMENTAL

Vitamin B12, 1,000 mg, Once

Drug: Cyanocobalamin

Placebo

PLACEBO COMPARATOR

Normal Saline Solution (0.9% Sodium Chloride), Once

Drug: Placebo

Interventions

1,000 mg, Once

Also known as: Vitamin B12
Cyanocobalamin

0.9% Sodium Chloride, Once

Also known as: Normal Saline Solution
Placebo

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Aged 18 to 65 years old
  • An active singer who is presently singing
  • Willing and able to comply with the study requirements
  • Completed and signed an informed consent form.

You may not qualify if:

  • Known vitamin B12 deficiency
  • Active or recent vitamin B12 treatment (the subject must not receive vitamin B12 treatment for at least 4 weeks)
  • Any known bleeding disorder
  • Any known laryngeal pathology
  • Plans to start any new treatment, oral/parenteral anticoagulant, supplement, or medication during the study period
  • Scored above the highest 10 percentile of performance in all three voice evaluation questionnaires will be withdrawn from the study before the first injection (i.e., scored less than or equal to 7 in the Voice Fatigue Index (VFI), less than or equal to 6 in the Evaluation of the Ability to Sing Easily (EASE), and less than or equal to 4 in the Singing Voice Handicap Index 10 (SVHI-10))

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Keck Medicine of USC - Downtown Los Angeles

Los Angeles, California, 90017, United States

Location

Related Publications (1)

  • Shoffel-Havakuk H, Lava CX, Reuven Y, Moog D, Odell K, Reder LS, Hapner ER, Johns MM 3rd. Effect of Vitamin B12 Injection on the Vocal Performance of Professional Singers: A Randomized, Double-blind, Placebo-Controlled, Crossover Trial. JAMA Otolaryngol Head Neck Surg. 2021 Jan 1;147(1):9-15. doi: 10.1001/jamaoto.2020.4026.

MeSH Terms

Conditions

Vitamin B 12 Deficiency

Interventions

Vitamin B 12Saline Solution

Condition Hierarchy (Ancestors)

Vitamin B DeficiencyAvitaminosisDeficiency DiseasesMalnutritionNutrition DisordersNutritional and Metabolic Diseases

Intervention Hierarchy (Ancestors)

CorrinoidsTetrapyrrolesPyrrolesAzolesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsHeterocyclic Compounds, 4 or More RingsHeterocyclic Compounds, Fused-RingMacrocyclic CompoundsPolycyclic CompoundsCrystalloid SolutionsIsotonic SolutionsSolutionsPharmaceutical Preparations

Study Officials

  • Hagit Shoffel-Havakuk, MD

    University of Southern California

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
early phase 1
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

July 2, 2017

First Posted

February 19, 2018

Study Start

October 1, 2017

Primary Completion

April 1, 2019

Study Completion

April 1, 2019

Last Updated

April 9, 2019

Record last verified: 2019-04

Locations