ClinicalTrials.gg
Status unknownNCT03430024Updated Nov 13, 2019

Nuclear Myosin VI - a Therapeutic Target in Breast Cancer

An observational study in Breast Cancer, sponsored by Maidstone & Tunbridge Wells NHS Trust. Status unknown at 1 site in United Kingdom. Open to female participants aged 18 Years to 85 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-11-13.

Sponsored by Maidstone & Tunbridge Wells NHS Trust · Observational

The sponsor has not verified this record recently (last verified Nov 2019), so the status shown — last known as Recruiting — may be out of date.

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Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
120
Ages
18 Years to 85 Years
Sex
Female
01

Where this study stands

Counted across the records on this site · 2026-11-15

Among 757 studies in Breast Neoplasms with a site in United Kingdom — 98 open to participants now, 196 under way, 67 of them phase 3. Breast Neoplasms · United Kingdom.

Planned enrollment
69th of 122
120 · median 221
Started
2019
with 38 others
Observational
123 of 757
30 open now
Registered
472nd of 757
by date

Among the 757 studies in Breast Neoplasms with a site in United Kingdom, this one is the 69th largest by planned enrollment of the 122 observational ones that give a count, is one of 39 that started in 2019, is one of 123 observational ones, and was the 472nd registered.

Breast Neoplasms

14,832 studies on the registry are indexed under Breast Neoplasms; 3,320 are open to participants now.

Browse Breast Neoplasms studies →

Open to participants now

98 of the 757 studies in Breast Neoplasms with a site in United Kingdom are open now. Recruiting first, the newest first:

93 more — sign in →

All 98 open studies →

A study can be open while its sites in United Kingdom have not opened yet or have stopped. Only those recruiting at a site in United Kingdom →

Who these studies take

Of the 2,399 Breast Neoplasms studies recruiting now, 1,570 (65%) set no upper age limit and 592 (25%) stop at 75 or younger; 103 take children under 18; 215 take healthy volunteers.

This study: 18 Years to 85 Years · female · healthy volunteers too.

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02

Study summary

Gene expression, the transfer of the genetic code into cellular proteins is one of the most fundamental processes in living cells. This process is orchestrated by protein-based molecular machines, called RNA polymerases that read the DNA sequence to generate messenger RNA (mRNA), which is translated by the cellular machinery to make proteins. Our cells have evolved elaborate regulation mechanisms to control these molecular machines and a breakdown in this regulation leads to diseases such as cancer.

Recently, molecules called myosins have been discovered in the genetic storage compartment of the cell (the nucleus) where they interact with RNA polymerases to regulate protein production. This is interesting because myosins are usually found outside the nucleus transporting cellular cargo or generating muscle contraction. In breast cancer cells, myosin is abundant and interacts with the oestrogen receptor. The majority of breast cancer in the UK is oestrogen receptor positive and activation of this receptor is an important factor controlling the growth of cancer cells. Oestrogen receptor activation appears to be dependent upon myosin and this research project will investigate how myosins are targeted to specific genes and how they are themselves regulated. This will greatly enhance our understanding of the role of nuclear myosins in oestrogen receptor positive breast cancer and may identify a novel therapeutic target for future drug development.

Read the detailed description

Purpose and Design The primary aim of this project is to understand the significance of the newly discovered interaction between myosin VI (MVI) and the oestrogen receptor in breast cancer cells. The study will investigate the types of genes that MVI regulates and whether the sites of MVI - oestrogen receptor interactions (nucleus or cytoplasm) are important for the expression of oestrogen receptor targets. In breast cancer cells, oestrogen receptors can mutate to become permanently activated, leading to unrestrained tumour growth. Investigating the role of MVI in this metabolic scenario may reveal a potential therapeutic window for hormone refractory oestrogen receptor positive breast cancer.

In order to answer these questions, the methodology will use combination of experiments on established cell lines and patient samples.

The research proposal is a collaborative effort between Dr Chris Toseland (whose group has identified the link between MVI and the oestrogen receptor) at the University of Kent and the Breast Surgery, Pathology and Research and Development departments at Maidstone and Tunbridge Wells NHS Trust.

Recruitment Potential patients for recruitment will be identified at the weekly multi-disciplinary meeting following a diagnosis of primary breast cancer and a decision to proceed with surgery as the first treatment. The actual explanation of the study will take place during the first treatment planning consultation with the treating breast surgeon. The patient will be given written information about the study as well as a contact number of a research nurse/ breast care nurse specialist for them to call if they wish to be included in the study. A second clinic appointment will be made with the co-investigator Miss Karina Cox to re-discuss the trial and obtain written consent. The consultant surgeon is familiar with the process of consent and will determine whether the patient has capacity to give consent for the study. We will exclude all patients with a metabolic disorder, significant co-morbidities and locally advanced or metastatic disease as well as those with a previous history of cancer treatment as the results of the study may be affected by their underlying disorder, previous treatment or current medication.

Confidentiality The study will be conducted within the "Caldicott Principles'. Patients enrolled in the study will be given a unique identification number which will used on samples sent to The University of Kent for experiments. The clinical co-investigator will maintain a secure database of patient identifiable information including demographic and clinico-pathological tumour data.

Conflict of Interest There are no conflicts of interest with this study. Any publications relating to this research will be summarised and distributed to participating patients.

Tissue samples will not be stored indefinitely. All the tissue from the fresh frozen specimens will be used for the experiments. The paraffin slides, once analysed, will be returned from the University of Kent to Maidstone and Tunbridge Wells Pathology Department.

03

Conditions studied

  • Breast Cancer

Browse trials for

Keywords

  • Myosin VI
  • Estrogen receptor
04

Who can participate

Ages eligible
18 Years to 85 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Tissue will be obtained from patients diagnosed with early invasive breast cancer undergoing primary surgery. We will enrol 100 women who have been newly diagnosed with T2 (>2cm) palpable invasive breast cancer having primary surgical treatment at Maidstone Hospital.

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

  • Clinical diagnosis of early breast cancer
  • Palpable tumour greater than 2cm
  • Scheduled for primary surgical treatment

Exclusion criteria

Exclusion Criteria:

  • Locally advanced breast cancer
  • breast cancer
  • Significant co-morbidities (ASA 4 or above)
  • Past history of breast cancer
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

05

Study design

Observational model
Other
Time perspective
Prospective
Enrollment
120 participants (estimated)
Patient registry
No

Groups and cohorts

  • Cases

    We will enrol 100 women who have been newly diagnosed with T2 (\>2cm) palpable invasive breast cancer having primary surgical treatment at Maidstone Hospital. We will exclude all patients with a metabolic disorder, significant co-morbidities and locally advanced or metastatic disease as well as those with a previous history of cancer treatment. We will collect data on tumour size, grade and phenotype as well as ER, progesterone receptor (PR) and Her-2 expression status and patient demographic information. We will investigate the Association of Myosin VI with oestrogen receptor.

    Other: Association of Myosin VI with oestrogen receptor

  • Controls

    A cohort of control breast tissue will be obtained from 20 patients undergoing benign surgical breast procedures. For those control patients having reduction mammoplasties the excised tissue will be core biopsied but patients having other types of benign surgery will have an extra core biopsy taken from breast tissue surrounding the lesion being excised.

    Other: Association of Myosin VI with oestrogen receptor

Interventions

  • OtherAssociation of Myosin VI with oestrogen receptor

    1. Gene expression analysis - RNA will be extracted from 100mg of tissue and then subjected to RT-qPCR to determine the relative expression levels of several genes, including MVI and ER Targets. We will use the same approach to determine which isoforms of MVI are expressed in the tissue. 2. Protein content analysis - Total protein will be extracted from 100 mg of tissue and western-blot analysis will be used to determine the relative amounts of MVI. Moreover, we will use cell fractionation to determine relative amounts of nuclear versus cytoplasmic protein. 3. Genomic analysis - Chromatin-immunoprecipitation (ChIP) experiments we be performed upon 100 mg of tissue sample. Here we will determine the localisation of MVI on the genome within the different tissues.

06

What researchers measure

Primary outcomes

  1. Gene expression of Myosin VI and oestrogen receptor targets in tumour tissue.

    RT-qPCR experiments to determine relative expression of Myosin VI and oestrogen receptor targets in tumour derived RNA and compare with control breast tissue.

    Time frame: 24 hours

  2. Quantification of Myosin VI protein in tumour tissue.

    Western-blot analysis and cell fractionation to determine relative amounts of Myosin VI compared to total protein extracted from 100mg of tumour tissue in nuclear and cytoplasmic compartments and compare with control tissue.

    Time frame: 24 hours.

  3. Localisation of Myosin VI on the tumour genome

    Chromatin-immunoprecipitation experiments to determine the position of Myosin VI in the tumour genome and compare with control tissue.

    Time frame: 24 hours.

Secondary outcomes

  1. Comparison of nuclear Myosin VI and oestrogen receptor localisation between different breast cancer prognostic groups.

    Immunohistochemisty experiments on paraffin preserved tumour tissue to determine the presence of nuclear Myosin VI and oestrogen receptors and, using a scoring system, compare between breast cancer prognostic groups and control tissue.

    Time frame: 3 months

07

Study locations

1 of 1 sites recruiting
  • Maidstone and Tunbridge Wells NHS Trust
    Maidstone, Kent ME16 9QQ, United Kingdom
    Recruiting
08

References and documents

Publications

  • Vreugde S, Ferrai C, Miluzio A, Hauben E, Marchisio PC, Crippa MP, Bussi M, Biffo S. Nuclear myosin VI enhances RNA polymerase II-dependent transcription. Mol Cell. 2006 Sep 1;23(5):749-55. doi: 10.1016/j.molcel.2006.07.005. PubMed 16949370 ↗
  • Su AI, Welsh JB, Sapinoso LM, Kern SG, Dimitrov P, Lapp H, Schultz PG, Powell SM, Moskaluk CA, Frierson HF Jr, Hampton GM. Molecular classification of human carcinomas by use of gene expression signatures. Cancer Res. 2001 Oct 15;61(20):7388-93. PubMed 11606367 ↗
  • Dunn TA, Chen S, Faith DA, Hicks JL, Platz EA, Chen Y, Ewing CM, Sauvageot J, Isaacs WB, De Marzo AM, Luo J. A novel role of myosin VI in human prostate cancer. Am J Pathol. 2006 Nov;169(5):1843-54. doi: 10.2353/ajpath.2006.060316. PubMed 17071605 ↗
  • Wang H, Wang B, Zhu W, Yang Z. Lentivirus-Mediated Knockdown of Myosin VI Inhibits Cell Proliferation of Breast Cancer Cell. Cancer Biother Radiopharm. 2015 Oct;30(8):330-5. doi: 10.1089/cbr.2014.1759. Epub 2015 Sep 25. PubMed 26407123 ↗
  • Yoshida H, Cheng W, Hung J, Montell D, Geisbrecht E, Rosen D, Liu J, Naora H. Lessons from border cell migration in the Drosophila ovary: A role for myosin VI in dissemination of human ovarian cancer. Proc Natl Acad Sci U S A. 2004 May 25;101(21):8144-9. doi: 10.1073/pnas.0400400101. Epub 2004 May 14. PubMed 15146066 ↗
  • Spudich G, Chibalina MV, Au JS, Arden SD, Buss F, Kendrick-Jones J. Myosin VI targeting to clathrin-coated structures and dimerization is mediated by binding to Disabled-2 and PtdIns(4,5)P2. Nat Cell Biol. 2007 Feb;9(2):176-83. doi: 10.1038/ncb1531. Epub 2006 Dec 24. PubMed 17187061 ↗
  • Morriswood B, Ryzhakov G, Puri C, Arden SD, Roberts R, Dendrou C, Kendrick-Jones J, Buss F. T6BP and NDP52 are myosin VI binding partners with potential roles in cytokine signalling and cell adhesion. J Cell Sci. 2007 Aug 1;120(Pt 15):2574-85. doi: 10.1242/jcs.007005. Epub 2007 Jul 17. PubMed 17635994 ↗
  • Naccache SN, Hasson T, Horowitz A. Binding of internalized receptors to the PDZ domain of GIPC/synectin recruits myosin VI to endocytic vesicles. Proc Natl Acad Sci U S A. 2006 Aug 22;103(34):12735-40. doi: 10.1073/pnas.0605317103. Epub 2006 Aug 14. Erratum In: Proc Natl Acad Sci U S A. 2006 Oct 10;103(41):15272. PubMed 16908842 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2019 (actual). Primary completion is estimated for Dec 2020, 19 months after the start.

Of 1,192 non-industry observational studies under Breast Neoplasms, half reached primary completion within 58 months of starting (the median), counting those still running; a quarter within 25 and three quarters within 138. This study's planned 19 months is below that.

Counting every sponsor, half of 1,381 studies reached it within 55 months; a quarter within 25 and three quarters within 125.

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

Registered
Jan 11, 2018
First posted
Feb 12, 2018
StartActual
May 5, 2019
Primary completionEst.
Dec 2020
CompletionEst.
Dec 2020
Last update
Nov 13, 2019
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 Nov 13, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03430024
Lead sponsor
Maidstone & Tunbridge Wells NHS Trust
Collaborators
University of Kent
Responsible party
Karina Cox (Consultant Breast and Oncoplastic Surgeon, Maidstone & Tunbridge Wells NHS Trust) — Principal investigator
First posted
Feb 12, 2018
Start date
May 5, 2019
Primary completion
Dec 2020 (estimated)
Completion
Dec 2020 (estimated)
Last update
Nov 13, 2019

Study contacts

Karina Cox, MD
Contact
karina.cox@nhs.net
00 45 1622 22 4111
Chris Toseland, PhD
Contact
c.toseland@kent.ac.uk
01227816515
Hazel Everest
study director · Maidstone and Tunbridge Wells NHS Trust

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 Nov 2019. You cannot join it, but the record below documents what was studied.

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