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CompletedNCT03498950Updated May 12, 2021

Changes in Sense of Taste of Patients Submitted to Hematopoietic Stem Cell Transplantation

An interventional study of laser therapy in Taste Disorders, sponsored by Fernanda de Paula Eduardo. Completed. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2021-05-12.

Sponsored by Fernanda de Paula Eduardo · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 2 months after the study started (first participant enrolled Feb 2016, registered Apr 2018).
Phase
Not applicable
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
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Study summary

During conditioning with chemotherapy and radiotherapy for the transplantation of hematopoietic stem cells (HSCT), oral changes, such as mucositis, xerostomia infections and dysgeusia may occur. Low level laser therapy is used to minimize the intensity of the lesions, prevent ulcerations in the mucosa, and diminish the time of healing. To verify the efficacy of low level laser therapy in the prevention of dysgeusia in patients undergoing allogenic HSCT and detect the frequency of dysgeusia, the flavors most changed, and the association of these changes with the clinical conditions of the patient. The study sample will be composed of 80 patients selected at the Hematopoietic Stem Cell Transplantation Center of the "Hospital Israelita Albert Einstein". The patients will be randomized and distributed into two groups: Placebo Group (n=40) - submitted to the routine laser therapy protocol in addition to simulated laser irradiation on the taste papillae; Test Group (n= 40) - submitted to the same laser therapy protocol as that of the Placebo Group, however, laser irradiation on the taste papillae will be effective. Daily intraoral exam will be performed in all the patients to evaluate mucositis, xerostomia and depapillation. The taste acuity test will determine the function of taste, using samples with the four basic flavors. This will be performed on the first day of conditioning (T0), during the stage of neutropenia (T1), at the time of discharge after transplantation (T2) and 100 days after transplantation (T3). A questionnaire will also be applied to evaluate the impact of changes in taste, smell and xerostomia on the quality of life. Our hypothesis is that the laser irradiation on the lingual papillae would help to prevent the changes in the cells of the taste papillae, preserving their morphology and function, which may attenuate the change in sense of taste and have a positive impact on the quality of life of patients during transplantation.

Read the detailed description

uring conditioning with chemotherapy and radiotherapy for the transplantation of hematopoietic stem cells (HSCT), oral changes, such as mucositis, xerostomia infections and dysgeusia may occur. Low level laser therapy is used to minimize the intensity of the lesions, prevent ulcerations in the mucosa, and diminish the time of healing. To verify the efficacy of low level laser therapy in the prevention of dysgeusia in patients undergoing allogenic HSCT and detect the frequency of dysgeusia, the flavors most changed, and the association of these changes with the clinical conditions of the patient. The study sample will be composed of 80 patients selected at the Hematopoietic Stem Cell Transplantation Center of the "Hospital Israelita Albert Einstein". The patients will be randomized and distributed into two groups: Placebo Group (n=40) - submitted to the routine laser therapy protocol in addition to simulated laser irradiation on the taste papillae; Test Group (n= 40) - submitted to the same laser therapy protocol as that of the Placebo Group, however, laser irradiation on the taste papillae will be effective. Daily intraoral exam will be performed in all the patients to evaluate mucositis, xerostomia and depapillation. The taste acuity test will determine the function of taste, using samples with the four basic flavors. This will be performed on the first day of conditioning (T0), during the stage of neutropenia (T1), at the time of discharge after transplantation (T2) and 100 days after transplantation (T3). A questionnaire will also be applied to evaluate the impact of changes in taste, smell and xerostomia on the quality of life. Our hypothesis is that the laser irradiation on the lingual papillae would help to prevent the changes in the cells of the taste papillae, preserving their morphology and function, which may attenuate the change in sense of taste and have a positive impact on the quality of life of patients during transplantation.

02

Conditions studied

  • Taste Disorders

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03

In context

Taste Disorders

43 studies on the registry are indexed under Taste Disorders; 6 are open to participants now.

This study's enrollment of 80 is close to the median of 78 across 20 interventional studies indexed under Taste Disorders.

Browse Taste Disorders studies →

Lead sponsor

This is the only study on the registry with Fernanda de Paula Eduardo as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • submitted a bone marrow transplantation
  • adequate oral hygiene
  • absence of periodontal disease and other infectious foci prior to transplantation
  • normal chewing, swallowing and phonation functions prior to transplantation
  • participation of all previously planned laser therapy sessions.

Exclusion criteria

Exclusion Criteria:

  • not performing all the steps of oral hygiene oriented during the transplant
  • lack of collaboration in diagnostic test of the palate
  • lack of records on dietary intake
  • absence of record of clinical data of interest for the project in the medical record
  • death during the transplant or 30 days after the completion of the bone marrow transplantation.
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Single group
Masking
Single (Participant)
Enrollment
80 participants (actual)

Study arms

  • No intervention
    Placebo Group

    submitted to the routine laser therapy protocol in addition to simulated laser irradiation on the taste papillae

  • Experimental
    Test Group

    submitted to the same laser therapy protocol as that of the Placebo Group, however, laser irradiation on the taste papillae will be effective.

    Other: laser therapy

Interventions

  • Otherlaser therapy

    laser irradiation on the taste papillae

06

What researchers measure

Primary outcomes

  1. descriptive function of taste

    using samples with the four basic flavors

    Time frame: 100 days

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Epstein JB, Barasch A. Taste disorders in cancer patients: pathogenesis, and approach to assessment and management. Oral Oncol. 2010 Feb;46(2):77-81. doi: 10.1016/j.oraloncology.2009.11.008. Epub 2009 Dec 28. PubMed 20036797 ↗
  • Boer CC, Correa ME, Miranda EC, de Souza CA. Taste disorders and oral evaluation in patients undergoing allogeneic hematopoietic SCT. Bone Marrow Transplant. 2010 Apr;45(4):705-11. doi: 10.1038/bmt.2009.237. Epub 2009 Sep 21. PubMed 19767788 ↗
  • Just T, Pau HW, Bombor I, Guthoff RF, Fietkau R, Hummel T. Confocal microscopy of the peripheral gustatory system: comparison between healthy subjects and patients suffering from taste disorders during radiochemotherapy. Laryngoscope. 2005 Dec;115(12):2178-82. doi: 10.1097/01.MLG.0000181502.07160.86. PubMed 16369163 ↗
  • Schubert MM, Eduardo FP, Guthrie KA, Franquin JC, Bensadoun RJ, Migliorati CA, Lloid CM, Eduardo CP, Walter NF, Marques MM, Hamdi M. A phase III randomized double-blind placebo-controlled clinical trial to determine the efficacy of low level laser therapy for the prevention of oral mucositis in patients undergoing hematopoietic cell transplantation. Support Care Cancer. 2007 Oct;15(10):1145-54. doi: 10.1007/s00520-007-0238-7. Epub 2007 Mar 29. PubMed 17393191 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2016 to primary completion in Feb 2018, 24 months.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 2, 2018
First posted
Apr 17, 2018
StartActual
Feb 2016
Primary completionActual
Feb 2018
CompletionActual
Aug 2019
Last update
May 12, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 12, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03498950
Lead sponsor
Fernanda de Paula Eduardo
Responsible party
Fernanda de Paula Eduardo (Dentist, Hospital Israelita Albert Einstein) — Sponsor-investigator
First posted
Apr 17, 2018
Start date
Feb 2016
Primary completion
Feb 2018
Completion
Aug 2019
Last update
May 12, 2021

Study contacts

Fernanda de P Eduardo
principal investigator · Hospital Israelita Albert Einstein

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2021. You cannot join it, but the record below documents what was studied.

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