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Gustabor Phase 2 - Treating Taste Changes During Cancer Therapy: A Randomized Study Evaluating an AI- Based Nutrition Intervention

Gustabor Phase 2 - Treating Taste Changes During Cancer Therapy: A Randomized Study Evaluating an AI- Based Nutrition Intervention

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07649681
Acronym
GustaborRCT
Enrollment
198
Registered
2026-06-16
Start date
2026-07-24
Completion date
2026-12-31
Last updated
2026-08-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

GI Cancer, Melanoma (Skin Cancer), Multiple Myeloma (MM), Taste Disorder, Urogenital Cancers

Brief summary

The study investigates taste disorders that commonly occur during or after cancer treatment, often leading to issues such as malnutrition and treatment discontinuation. Although many non-pharmacological recommendations exist, it is unclear which methods are suitable for which individuals. This randomized study aims to compare the effectiveness of individualized dietary recommendations (Gustabor group) with the current standard of care -general recommendations (Control group). Participants will undergo an objective assessment of taste disorders using taste strips and questionnaires. Based on the results, the Gustabor group will receive both general and specific dietary suggestions. These will be accomapnied by AI-generated recipe suggestions tailored to specific taste disorders (e.g., more cold foods in cases of metallic taste). The control group will receive the current standard: a flyer containing general dietary advice for oncology patients previously shown to be beneficial for managing taste alterations. The primary endpoint is the PG-SGA score within 12 weeks of inclusion.

Interventions

AI based web platform providing individual lifestyle tips and recipe recommendations based on the patient's individual data and taste disorder

Flyer consisting of current standard recommendations for taste disorders from scientifically published measures

Sponsors

Wuerzburg University Hospital
Lead SponsorOTHER
LMU Klinikum
CollaboratorOTHER
University Hospital Regensburg
CollaboratorOTHER
University Hospital Erlangen
CollaboratorOTHER
University Hospital Augsburg
CollaboratorOTHER
TUM Klinikum
CollaboratorUNKNOWN

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Intervention model description

Prospective, randomized, non-blinded intervention study

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age ≥ 18 * Suffering from one of the following tumor entities: Multiple myeloma, melanoma, urogenital cancer or malignant tumor of the gastrointestinal tract * Mainly oral nutrition * Subjectively perceived tumor therapy-related taste disorder * At least two clinical presentations planned within 12 weeks with a minimum interval of three weeks * Ability to participate in nutritional intervention, including use of the online portal and implementation of recipe suggestions (e.g. resources and access to a kitchen), either independently or with third-party support (e.g. by relatives, outpatient care services).

Exclusion criteria

* Pregnancy * Taste disorder explained by other causes (e.g. existing before therapy or COVID disease) * Placement in an inpatient care facility

Design outcomes

Primary

MeasureTime frameDescription
Patient-generated Subjective Global Assessment (PG-SGA) ScoreWithin 12 weeks of inclusionPG-SGA measures four key areas: weight history, including recent unintentional weight loss; the presence of nutrition-impacting symptoms such as nausea, taste changes, and appetite loss; current food intake compared to normal levels; and functional status, which measures the ability to perform daily activities. Based on the responses, a numeric score is calculated, with higher scores indicating a greater risk of malnutrition and the need for dietary intervention.

Secondary

MeasureTime frameDescription
Identification of measures that were perceived as helpfulWithin 12 weeks of inclusionFeedback rating regarding the individual tested measures as helpful / not helpful. Rating using a 3-point scale: "Tried it and it didn't help", "Was somewhat helpful" and "Was very helpful".
Correlation of PG-SGA progression (PG-SGA Questionnaire) with individual taste perceptions (taste strips), tumor type and ongoing tumor therapy (questionnaire)Within 12 weeks of inclusionCorrelation of PG-SGA total score progression with individual taste perception, tumor type, and ongoing tumor therapy. The PG-SGA total score is assessed at both visits using the Scored Patient-Generated Subjective Global Assessment (PG-SGA) questionnaire and reflects the patient's nutritional status. Individual taste perception is measured using the Taste Strips and the corresponding rating scheme provided by Burghart Messtechnik. Tumor type (melanoma, multiple myeloma, gastrointestinal tumors, and urogenital tumors) as well as ongoing tumor therapy (chemotherapy, radiotherapy, and immunotherapy) are assessed using a questionnaire.

Countries

Germany

Contacts

CONTACTProf. Dr. med. Alexander Hann
Hann_A@ukw.de+49 931 201 45918
CONTACTDr. med. Anna Fleischer
Fleischer_A@ukw.de

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 21, 2026