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Strain Classification of Mycobacterium Tuberculosis: Congruence Between Large Sequence Polymorphisms and Spoligotypes

Overview
Journal Int J Tuberc Lung Dis
Specialty Pulmonary Medicine
Date 2011 Feb 1
PMID 21276309
Citations 34
Authors
M Kato-Maeda
S Gagneux
L L Flores
E Y Kim
P M Small
E P Desmond
P C Hopewell
Affiliations
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Abstract

Spoligotyping is used in molecular epidemiological studies, and signature patterns have identified strain families. However, homoplasy occurs in the markers used for spoligotyping, which could lead to identical spoligotypes in phylogenetically unrelated strains. We determined the accuracy of strain classification based on spoligotyping using the six large sequence and single nucleotide polymorphisms-defined lineages as a gold standard. Of 919 Mycobacterium tuberculosis isolates, 870 (95%) were classified into a spoligotype family. Strains from a particular spoligotype family belonged to the same lineage. We did not find convergence to the same spoligotype. Spoligotype families appear to be sub-lineages within the main lineages.

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