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Status unknownNCT03518268Updated Jan 17, 2019

Vivomixx for Prevention of Bone Loss in Women With Breast Cancer Treated With an Aromatase Inhibitor

A Phase 1/2 interventional study of Vivomixx and Placebo in Breast Cancer and Osteoporosis, Osteopenia, sponsored by Tel-Aviv Sourasky Medical Center. Status unknown. Open to female participants aged 35 Years and older. Per ClinicalTrials.gov, last updated 2019-01-17.

Sponsored by Tel-Aviv Sourasky Medical Center · Phase 1/2, Interventional, and Prevention

The sponsor has not verified this record recently (last verified Jan 2019), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Phase 1/2
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
35 Years and older
Sex
Female
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Study summary

This study evaluates the efficacy of the probiotic food supplement Vivomixx in the prevention of bone loss occurring in post menopausal women with breast cancer treated with an aromatase inhibitor. Half of the participants will receive Vivomixx while the other half will receive a placebo. The primary endpoint is to assess changes of bone turnover markers during the period of 6 months.

Read the detailed description

Aromatase inhibitors function to reduce estrogen levels. They are considered first-line treatment for postmenopausal women with estrogen receptor-positive breast cancer. Estrogen depletion leads to significant loss of bone mineral density and an increased fracture risk. One contributing mechanism to "estrogen deficiency associated bone loss" is the increase in systemic and local gut inflammatory responses upon estrogen deficiency. Probiotics have been shown to decrease inflammatory cytokine formation in both the systemic circulation and gut.

Vivomixx is a high potency probiotic medical food designated for the dietary management of inflammatory gut conditions in adults and children and is currently being studied in clinical trials in a wide variety of inflammatory conditions such as asthma and diabetes. In preclinical studies Vivomixx has been shown to protect from estrogen deficient bone loss.

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Conditions studied

  • Breast Cancer
  • Osteoporosis, Osteopenia

Keywords

  • probiotics
  • aromatase inhibitors
  • bone mass
  • postmenopausal
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In context

Breast Neoplasms

12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.

This study's planned enrollment of 40 is below the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

Tel-Aviv Sourasky Medical Center is the lead sponsor of 541 studies on the registry; 49 are open to participants now.

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

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Who can participate

Ages eligible
35 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  1. Age≥ 35 years
  2. Breast cancer stages 1-3 (non metastatic)
  3. Under treatment with aromatase inhibitors
  4. In menopausal status for ≤10y
  5. Estrogen receptor positive tumor
  6. CTX ≥300 pg/ml

Exclusion criteria

Exclusion criteria

  1. Distant metastases
  2. Additional active primary malignancy
  3. Metabolic bone disease (primary hyperparathyroidism, hyperthyroidism, paget, osteomalacia etc)
  4. Glucocorticoid treatment (chronic or high dose >7.5 mg in the last three months)
  5. Bisphosphonate treatment for more than 3 months in the last 2 years
  6. Bone densitometry (DXA) T-Score \<-2 unless not a candidate for antiresorptive therapy (unwilling/unable to take treatment)
  7. Lactose intolerant subjects
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Study design

Phase
Phase 1 / Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
40 participants (estimated)

Study arms

  • Active comparator
    Dietary supplement Vivomixx

    Vivomixx sachets contains a mixture of 450 billion viable lyophilized bacteria from 8 strains: Lactobacillus paracasei DSM 24733, Lactobacillus plantarum DSM 24730, Lactobacillus acidophilus DSM 24735, Lactobacillus delbrueckii subspecies bulgaricus DSM 24734, Bifidobacterium longum DSM 3 24736, Bifidobacterium infantis DSM 24737, Bifidobacterium breve DSM 24732, and Streptococcus thermophilus DSM 24731

    Drug: Vivomixx

  • Placebo comparator
    Placebo

    The placebo sachets contain the inactive ingredients maltose and silicon dioxides

    Drug: Placebo

Interventions

  • DrugVivomixx

    The intervention consists of 2 sachets a day containing the probiotic Vivomixx, for 6 months

  • DrugPlacebo

    The intervention consists of 2 sachets a day of placebo, for 6 months

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What researchers measure

Primary outcomes

  1. Collagen type 1 cross-linked C-telopeptide (CTX)

    Change in percent in CTX in serum compared to placebo

    Time frame: 3-6 months

  2. Serum type 1 procollagen (N-terminal) P1NP

    Change in percent in serum in P1NP compared to placebo

    Time frame: 3-6 months

Secondary outcomes

  1. Alkaline phosphatase/ bone specific alkaline phosphatase

    Change in percent in alkaline phosphatase/ bone specific alkaline phosphatase in serum compared to placebo

    Time frame: 3-6 months

  2. Osteocalcin

    Change in percent in osteocalcin in serum compared to placebo

    Time frame: 3-6 months

  3. Sclerostin

    Change in percent in sclerostin in serum compared to placebo

    Time frame: 3-6 months

  4. Tumor-necrosis factor-alpha

    Change in percent in tumor-necrosis factor-alpha in serum compared to placebo

    Time frame: 3-6 months

  5. Interleukin-17

    Change in percent in interleukin-17 in serum compared to placebo

    Time frame: 3-6 months

  6. Receptor activator of nuclear factor kappa B ligand (RANK-ligand)

    Change in percent in RANK-ligand in serum compared to placebo

    Time frame: 3-6 months

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Study locations

No study locations are listed for this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 17, 2019, 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
NCT03518268
Lead sponsor
Tel-Aviv Sourasky Medical Center
Collaborators
Perrigo Company
Responsible party
michal roll (Deputy Director General for R&D, Tel-Aviv Sourasky Medical Center) — Principal investigator
First posted
May 8, 2018
Start date
Jan 2019 (estimated)
Primary completion
Apr 2021 (estimated)
Completion
Jun 2021 (estimated)
Last update
Jan 17, 2019

Study contacts

Sigal Shaklai, M.D, Ph.D
Contact
Sigal.shaklai@gmail.com
+972-3-6973732
Vanessa Rouach, M.D
Contact
vanessar@tlvmc.gov.il
+972-3-6973732
Naftali Stern, M.D
study director · Tel-Aviv Sourasky Medical Center

Oversight

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

Not currently enrolling

This study is status unknown, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

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