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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02099760
Other study ID # PRO13100170
Secondary ID 5U01AI068633-04
Status Completed
Phase
First received
Last updated
Start date December 2013
Est. completion date April 2015

Study information

Verified date February 2019
Source University of Pittsburgh
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The purpose of this study is to validate Xpert CT/NG for the detection of CT and GC in rectal samples as part of the PA DOH and CLIA requirements. The evaluation of samples obtained from the pharynx is exploratory and will provide new information on the frequency of pharyngeal infection due to CT and GC.

A secondary objective will be to evaluate the prevalence of Trichomonas vaginalis in vaginal and rectal samples using both the Xpert system and AC2 to assess whether women positive for this pathogen rectally usually or always have vaginal infection due to this pathogen.

The investigators hypothesis is that real-time PCR (polymerase chain reaction) amplification testing with the Cepheid Xpert CT/NG will have greater sensitivity than culture in detecting Neisseria gonorrhoeae in rectal samples. The investigators also hypothesize that Xpert CT/NG will be equivalent to the Gen-Probe APTIMA Combo2 (AC2) in detecting Chlamydia trachomatis and Neisseria gonorrhoeae in rectal samples.


Description:

Because of its high sensitivity and specificity, NAAT testing has largely replaced bacterial culture for the diagnosis of genital CT and GC in both males and females. NAAT assays have the greatest potential for detecting CT and GC in the rectum; however, no NAAT is currently cleared for use with extragenital specimens by the US Food and Drug Administration.

In order to comply with CLIA regulations, laboratories must perform in-house validations to use NAATs with rectal and pharyngeal specimens. There are multiple studies in the literature evaluating NAAT assays in diagnosing CT and GC in rectal and pharyngeal specimens using expanded reference standards, which includes positive culture result and secondary confirmatory NAAT assays. The proposed validation study is intended to provide data to support the use of NAAT for rectal and pharyngeal specimens.


Recruitment information / eligibility

Status Completed
Enrollment 402
Est. completion date April 2015
Est. primary completion date April 2015
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

1. Male and female participants aged 18 and older

2. Women or men who have a history of engaging in receptive anal intercourse

3. Willing to provide written informed consent for participation in this study

Exclusion Criteria:

1. Use of oral antibiotics in the past 7 days

2. Use of rectal douche or other rectal product in the past 24 hours

3. If female, use of a vaginal douche or vaginal product in the past 24 hours

Study Design


Intervention

Device:
STD testing (GC/Ct/trich)


Locations

Country Name City State
United States Allegheny County Health Department Sexually Transmitted Diseases Clinic Pittsburgh Pennsylvania
United States Magee-Womens Hospital of UPMC Pittsburgh Pennsylvania

Sponsors (2)

Lead Sponsor Collaborator
University of Pittsburgh National Institute of Allergy and Infectious Diseases (NIAID)

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Rectal Gonorrhea/Chlamydia testing result Compare the sensitivity and specificity of the Xpert NG to the AC2 and culture in detecting GC in rectal samples Compare the sensitivity and specificity of the Xpert CT to AC2 (and as necessary, for discrepant results, to Aptima CT assay) in detecting CT in rectal samples approximately 7 days
Secondary pharyngeal GC/Ct result The evaluation of samples obtained from the pharynx is exploratory and will provide new information on the frequency of pharyngeal infection due to CT and GC. approximately 7 days
Secondary Trichomonas Testing Results evaluate the prevalence of Trichomonas vaginalis in vaginal and rectal samples using both the Xpert system and AC2 approximately 7 days
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