NCT00839241

Brief Summary

The primary objective of the study is to compare the immunological status after either autologous blood transfusion as administered by Bellovac® ABT or allogenic blood transfusion, with regards to change in Natural Killer (NK) cell frequency in patients undergoing total knee replacement.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
45

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Jan 2009

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2009

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

February 6, 2009

Completed
3 days until next milestone

First Posted

Study publicly available on registry

February 9, 2009

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2009

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2009

Completed
1.3 years until next milestone

Results Posted

Study results publicly available

October 4, 2010

Completed
Last Updated

November 11, 2021

Status Verified

November 1, 2021

Enrollment Period

5 months

First QC Date

February 6, 2009

Results QC Date

July 19, 2010

Last Update Submit

November 10, 2021

Conditions

Outcome Measures

Primary Outcomes (6)

  • Frequency of Natural Killer Cells as Measured With Flow Cytometry.

    Baseline

  • Frequency of Natural Killer Cells as Measured With Flow Cytometry.

    Day 5 postop

  • Frequency of Natural Killer Cells as Measured With Flow Cytometry.

    Day 8 postop

  • Natural Killer Cells (Proportion of Lymphocytes, Measured With Flow Cytometry)

    Baseline

  • Natural Killer Cells (Proportion of Lymphocytes, Measured With Flow Cytometry)

    Day 5 postop

  • Natural Killer Cells (Proportion of Lymphocytes, Measured With Flow Cytometry)

    Day 8 postop

Secondary Outcomes (34)

  • Interferon Gamma

    Baseline

  • Interferon Gamma

    Day 5 postop

  • Interferon Gamma

    Day 8 postop

  • Interleukin-2

    Baseline

  • Interleukin-2

    Day 5 postop

  • +29 more secondary outcomes

Study Arms (2)

Autologous Blood Transfusion

EXPERIMENTAL
Device: Bellovac ABT

Allogenic Blood Transfusion

ACTIVE COMPARATOR
Procedure: Allogenic Blood Transfusion

Interventions

Bellovac ABT (autologous blood)

Autologous Blood Transfusion

Transfusion of allogenic ("bank") blood.

Allogenic Blood Transfusion

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Provision of informed consent
  • Male and female patients aged 18 years and over scheduled for total knee replacement
  • Subjects classified as ASA Physical Status Classification System class P1, P2 or P3 according to the American Society of Anaesthesiology

You may not qualify if:

  • Involvement in the planning and conduct of the study (applies to both Astra Tech staff or staff at the study site)
  • Pre-operatively haemoglobin below normal range as judged by the investigator
  • Previous enrolment or randomisation to treatment in the present study
  • Expected or confirmed participation in another clinical study during the study period
  • Severe non-compliance to protocol as judged by the investigator and/or Astra Tech
  • Current symptoms of haemophilia
  • History of or presence of malignant disease with propensity for systemic spread during the last 5 years
  • Current or expected use of cytotoxic drugs
  • Current untreated anaemia (e.g. sickle cell anaemia) as deemed by investigator
  • Use of pre-donation
  • Use of recombinant erythropoetin
  • Use of other autologous blood transfusion than that with Bellovac ABT, e.g. washed and centrifuged blood like CellSaver

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Specjalistyczny Szpital Im. Alfreda Sokolowskiego

Szczecin, 70 891, Poland

Location

Results Point of Contact

Title
Head of Clinical Research Area Health Care
Organization
Astra Tech AB

Study Officials

  • Magnus Jacobsson, MD, PhD, Prof.

    Dentsply Sirona Implants and Consumables

    STUDY DIRECTOR

Publication Agreements

PI is Sponsor Employee
No
Restriction Type
GT60
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 6, 2009

First Posted

February 9, 2009

Study Start

January 1, 2009

Primary Completion

June 1, 2009

Study Completion

June 1, 2009

Last Updated

November 11, 2021

Results First Posted

October 4, 2010

Record last verified: 2021-11

Locations