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| Name | Class |
|---|---|
| Medical Action Myanmar | OTHER |
| Department of Medical Research, Myanmar | UNKNOWN |
| Lao-Oxford-Mahosot Hospital Wellcome Trust Research Unit | OTHER |
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This study will evaluate a new point of care diagnostic test for the diagnosis of melioidosis pneumonia in patients attending outpatient clinics in Yangon, Myanmar
Melioidosis is caused by Burkholderia pseudomallei, a Gram-negative saprophytic environmental bacterium that is an important emerging tropical infection. There are an estimated 165,000 cases and 89,000 deaths world-wide each year. Eighty-four percent of cases are in SE Asia where mortality is 40%; far exceeding most recognised neglected tropical diseases. Pneumonia, secondary to either inhalation of B.pseudomallei or to bacteraemic spread to the lung is the commonest presentation (51%). Annually the highest burden (75%) of infection occurs in the rainy season in (75% in Thailand). Up to 80% patients have at least one recognised risk factor for melioidosis including; diabetes, alcohol-dependence, glucocorticoid therapy, chronic obstructive pulmonary disease (COPD), chronic renal disease and cancer. COPD and diabetes mellitus are amongst the top ten causes of death in Myanmar (2018). Patients with HIV have not been shown to have greater risk of B. pseudomallei than immunocompetent patients.
Melioidosis was discovered in Myanmar in 1911 by British pathologist Alfred Whitmore and his assistant CS Krishnaswami. Yet since 1949 there have been few published cases. Under-reporting is partly due to difficulty in diagnosing melioidosis. Clinical and radiological findings are indistinguishable from tuberculosis. Laboratory diagnosis is challenging, lack of facilities, expertise and awareness of B.pseudomallei results in missed diagnostic opportunities.
Culture is the gold-standard diagnostic method but requires appropriate facilities and expertise which are not readily available in many developing countries like Myanmar. A rapid diagnostic (RDT) test has been developed for low resource settings that has been evaluated in Laos and India. The InBios® Active Melioidosis DetectTM-Lateral Flow Assay (AMD-LFA) detects B.pseudomallei 6-deoxyheptan capsular polysaccharide antigen. Shaw et al demonstrated sensitivity 85.71% (CI:74.61% to 93.25%) and specificity 93.62% (CI:88.23% to 97.04%), with positive predictive value of 85.71% (CI: 75.98% to 91.92%) compared to culture. We propose to evaluate this test for the diagnosis of melioidosis pneumonia in Myanmar.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| InBios® Active Melioidosis DetectTM-Lateral Flow Assay | Diagnostic Test | Evaluation of a lateral flow assay for the detection of B.pseudomallei 6-deoxyheptan capsular polysaccharide antigen from sputum |
| Measure | Description | Time Frame |
|---|---|---|
| Proportion of patients with a positive B.pseudomallei culture result | Number of patients with a positive sputum culture for B.pseudomallei expressed as a proportion of all patients | January 2019 |
| 1) Sensitivity, specificity, positive predictive value, negative predictive value of the RDT compared to culture | Using culture as the gold-standard the performance of the lateral flow assay will be assessed | January 2019 |
| Measure | Description | Time Frame |
|---|---|---|
| Proportion of patients diagnosed with tuberculosis (TB) including multidrug resistant TB | Proportion of enrolled participants with a positive GeneXpert MTB/RIF test on sputum | January 2019 |
| Proportion of patients diagnosed with Influenza A/B |
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Inclusion Criteria:
Exclusion Criteria:
1. Inability to provide a sputum specimen
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The population investigated will be patients attending two non-governmental organisation community clinics in the most deprived areas of Yangon, Myanmar
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| Name | Affiliation | Role |
|---|---|---|
| Elizabeth A Ashley, Dr | Myanmar Oxford Clinical Research Unit | Principal Investigator |
| Frank Smithuis, Prof | Myanmar Oxford Clinical Research Unit and Medical Action Myanmar | Principal Investigator |
| Clare Warrell, Dr | Myanmar Oxford Clinical Research Unit and Medical Action Myanmar | Study Director |
| David Dance, Prof | Lao-Oxford-Mahosot Hospital Wellcome Trust Research Unit | Study Director |
| Ni Ni Tun, Dr | Medical Action Myanmar | Study Director |
| Mo Mo Win, Dr | Department of Medical Research, Myanmar | Study Director |
| Alistair McLean, Dr | Myanmar Oxford Clinical Research Unit | Study Director |
| Kyaw Soe | Myanmar Oxford Clinical Research Unit | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Medical Action Myanmar Clinics | Yangon | Burma |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 27571754 | Background | Limmathurotsakul D, Golding N, Dance DA, Messina JP, Pigott DM, Moyes CL, Rolim DB, Bertherat E, Day NP, Peacock SJ, Hay SI. Predicted global distribution of Burkholderia pseudomallei and burden of melioidosis. Nat Microbiol. 2016 Jan 11;1:15008. doi: 10.1038/nmicrobiol.2015.8. | |
| 24651568 | Background | Houghton RL, Reed DE, Hubbard MA, Dillon MJ, Chen H, Currie BJ, Mayo M, Sarovich DS, Theobald V, Limmathurotsakul D, Wongsuvan G, Chantratita N, Peacock SJ, Hoffmaster AR, Duval B, Brett PJ, Burtnick MN, Aucoin DP. Development of a prototype lateral flow immunoassay (LFI) for the rapid diagnosis of melioidosis. PLoS Negl Trop Dis. 2014 Mar 20;8(3):e2727. doi: 10.1371/journal.pntd.0002727. eCollection 2014 Mar. |
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| ID | Term |
|---|---|
| D011014 | Pneumonia |
| D008554 | Melioidosis |
| D004194 | Disease |
| ID | Term |
|---|---|
| D012141 | Respiratory Tract Infections |
| D007239 | Infections |
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
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Proportion of enrolled participants with a positive Xpert Flu test on nasopharyngeal swab
| March 2019 |
| 16354832 | Background | Chierakul W, Wuthiekanun V, Chaowagul W, Amornchai P, Cheng AC, White NJ, Day NP, Peacock SJ. Short report: disease severity and outcome of melioidosis in HIV coinfected individuals. Am J Trop Med Hyg. 2005 Dec;73(6):1165-6. |
| 29579128 | Background | Shaw T, Tellapragada C, Ke V, AuCoin DP, Mukhopadhyay C. Performance evaluation of Active Melioidosis Detect-Lateral Flow Assay (AMD-LFA) for diagnosis of melioidosis in endemic settings with limited resources. PLoS One. 2018 Mar 26;13(3):e0194595. doi: 10.1371/journal.pone.0194595. eCollection 2018. |
| 29720430 | Background | Woods KL, Boutthasavong L, NicFhogartaigh C, Lee SJ, Davong V, AuCoin DP, Dance DAB. Evaluation of a Rapid Diagnostic Test for Detection of Burkholderia pseudomallei in the Lao People's Democratic Republic. J Clin Microbiol. 2018 Jun 25;56(7):e02002-17. doi: 10.1128/JCM.02002-17. Print 2018 Jul. |
| 22970946 | Background | Wiersinga WJ, Currie BJ, Peacock SJ. Melioidosis. N Engl J Med. 2012 Sep 13;367(11):1035-44. doi: 10.1056/NEJMra1204699. No abstract available. |
| D019121 |
| Burkholderia Infections |
| D016905 | Gram-Negative Bacterial Infections |
| D001424 | Bacterial Infections |
| D001423 | Bacterial Infections and Mycoses |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |