Asian Journal of Transfusion Science
Home About Journal Editorial Board Search Current Issue Ahead of print Back Issues Instructions Subscribe Login  Users: 952 Print this page  Email this page Small font sizeDefault font sizeIncrease font size 
CASE REPORT
Year : 2019  |  Volume : 13  |  Issue : 2  |  Page : 129-131

Detection of a rare subgroup of A phenotype while resolving ABO discrepancy


1 Department of Transfusion Medicine, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
2 Department of Transfusion Medicine, National Institute of Immunohaematology, Mumbai, Maharashtra, India

Correspondence Address:
Debasish Gupta
Department of Transfusion Medicine, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ajts.AJTS_118_17

Rights and Permissions

Weaker subgroups of ABO blood group system give rise to discrepancies between forward and reverse grouping and cause diagnostic difficulties in routine blood banking. Weaker subgroups of A blood group that have been reported so far include A3, Aend, Ax, Am, Ay, and Ael. We report a case of a 54-year-old patient whose red cells showed a discrepancy between cell and serum grouping on initial testing. Serological investigation included absorption elution tests and saliva testing after performing initial blood grouping. Molecular genotyping of the ABO gene was performed by DNA sequencing of exons 6 and 7 of the ABO gene. The serological characteristics of the patient's red cells were similar to Ax subtype. The patient was a secretor and only H substance was present in the saliva. Serum did not show the presence of anti-A1. Molecular genotyping confirmed the ABO status as Aw06/O13. The weak A phenotype identified in the propositus had serological characteristics similar to Ax and showed the ABO genotype Aw06/O13. Although Aw06 allele has been previously reported in the Indian population, this is the first study to report O13 allele in the Indian population.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed892    
    Printed42    
    Emailed0    
    PDF Downloaded0    
    Comments [Add]    

Recommend this journal

 

Association Contact us | Sitemap | Advertise | What's New | Feedback | Copyright and Disclaimer

2006 - Asian Journal of Transfusion Science | Published by Wolters Kluwer - Medknow
Online since 10th November, 2006