CClinicalTrials.gg
Status unknownNCT04857229HiCoSHUpdated Feb 14, 2023

Histolog Comparison to Standard Histology

An observational study in Margins of Excision and Breast Cancer, sponsored by Imperial College London. Status unknown at 1 site in United Kingdom. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-02-14.

Sponsored by Imperial College London · Observational

The sponsor has not verified this record recently (last verified Feb 2023), so the status shown — last known as Active, not recruiting — may be out of date.
Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
101
Ages
18 Years and older
Sex
Female
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Study summary

This is a clinical device trial to assess the accuracy of margin assessment for a confocal scanning device (Histolog Scanner) at assessing the margins of breast tissue following wide local excision surgery.

Read the detailed description

Currently a 15-20% of breast cancer patients have cancer cells seen at the edge of the tissue removed following. These patient will need to undergo a second operation to ensure all the cancer cells are removed, which has psychological, cosmetic and cost implications. Several technologies have been designed to allow the edges of tissue to be tested during surgery, with the most accurate being those that involve assessing the tissue edge at a cellular level. However, these techniques are time consuming which makes their use in routine work impractical.

The Histolog system uses pinhole (confocal) microscopy to capture cellular level images of the edge of tissue intra-operatively. The first generation of the device has been shown to be accurate for assessing breast tissue biopsies and skin cancer. The second generation of the device has an 8cm plate for scanning tissue and is CE marked for the assessment of tissue margins. This project is to show that the device is accurate for the assessment of margins, with further assessment in relation to the time for images to be captured and ease of interpretation to assess overall feasibility. The study would recruit at a single high volume breast cancer centre. The study will recruit patients with a diagnosis of breast cancer who are due to undergo breast conservation surgery (lumpectomy) with inclusion criteria of female patients over the age of 18 who are able to give informed consent. The study would involve the edges of removed tissue being imaged following surgery. These images would be reported by a consultant histopathologist and compared to the routine gold standard histology. There is no change to patient care and the device will not be used to change the surgery performed. There are no questionnaires or additional demands placed on the participants.

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Conditions studied

  • Margins of Excision
  • Breast Cancer
03

In context

Lead sponsor

Imperial College London is the lead sponsor of 824 studies on the registry; 178 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 6 (67%) have results posted.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patient undergoing surgery for breast cancer, who are due to undergo breast conservation surgery. Patient with a diagnosis of invasive breast cancer or DCIS are eligible for recruitment.

Inclusion criteria

  • Patient capable of providing informed consent
  • Female
  • Have a diagnosis of invasive breast cancer or ductal carcinoma in-situ
  • Have been discussed within the multidisciplinary meeting with a recommendation that the patient is suitable for breast conservation therapy
  • Any localisation technique can be used of impalpable lesions (eg if the wire impairs the image quality, this will inform for full scale research)
  • Patient undergoing breast conservation surgery
  • Patient undergoing further breast conservation surgery for positive margins after previous surgery
  • Patient's will be able to participate for a re-excision of margin, even if they did not participate for their initial operation

Exclusion criteria

Exclusion Criteria:

Patient undergoing mastectomy, including completion mastectomy due to involved margins

  • Patients undergoing excision biopsies
  • Male patients
  • Patients under the age of 18
  • Unable to provide valid consent in English language
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Study design

Observational model
Other
Time perspective
Prospective
Enrollment
101 participants (actual)
Patient registry
No

Groups and cohorts

  • All patient

    All recruited patient will have their margins assessed with the confocal microscope with comparison of accuracy against gold standard histology.

    Device: Histolog Scanner

Interventions

  • DeviceHistolog Scanner

    Confocal Microscope

06

What researchers measure

Primary outcomes

  1. To compare the sensitivity and specificity of involved margins being assessed intra-operatively using Histolog® Scanner system against conventional histology reporting for patient undergoing breast conservation surgery for breast cancer.

    To compare the sensitivity and specificity of involved margins being assessed intra-operatively using Histolog® Scanner system against conventional histology reporting for patient undergoing breast conservation surgery for breast cancer.

    Time frame: 6 months

07

Study locations

1 site
  • Imperial College NHS Trust
    London, W6 8RF, United Kingdom
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 14, 2023, 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
NCT04857229
Lead sponsor
Imperial College London
Collaborators
SamanTree Medical SA
Responsible party
Sponsor
First posted
Apr 23, 2021
Start date
Jun 4, 2021
Primary completion
Dec 2023 (estimated)
Completion
Dec 2023 (estimated)
Last update
Feb 14, 2023

Study contacts

Daniel R Leff, MBBS FRCS (Gen Surg) MS PhD
principal investigator · Imperial College London

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 Feb 2023. You cannot join it, but the record below documents what was studied.

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