Abstract
To estimate the prevalence of monogenic inborn errors of immunity in patients with autoimmune diseases (AID), the study included 56 subjects (male:female ratio: 1.07) with mean age of onset of autoimmunity 7 years (4 months–46 years). 21/56 had polyautoimmunity. 5/56 patients met the JMF criteria for PID. The different AID referred were hematological (42%) > gastrointestinal (GI) (16%) > skin (14%) > endocrine (10%) > rheumatological (8%) > renal (6%) > neurological (2%). 36/56 reported recurrent infections. 27/56 were on polyimmunotherapy. 18/52 (35%) had CD19 lymphopenia, 24/52 (46%) had CD4 lymphopenia, 11/52 (21%) had CD8 lymphopenia, and 14/48 (29%) had NK lymphopenia. 21/50 (42%) had hypogammaglobinemia; 3 of whom were given rituximab. 28/56 were found to have pathogenic variants among PIRD genes. These 28 patients had 42 AID among which hematological was most common (50%) > GI (14%) = skin (14%)> endocrine (9%) > rheumatological (7%) > renal and neurological (2%). Hematological AID was the most common AID (75%) in children with PIRD. Positive predictive value (PPV) of abnormal immunological tests was 50% and sensitivity of 70%. JMF criteria had specificity of 100% in identifying PIRD and sensitivity of 17%. Polyautoimmunity had a PPV of 35% and sensitivity of 40%. 11/28 of these children were offered transplant. 8/28 were started on sirolimus, 2/28 on abatacept, and 3/28 on baricitinib/ruxolitinib after diagnosis. In conclusion, 50% of children with AID have underlying PIRD. LRBA deficiency and STAT1 GOF were the most common PIRD. Age at presentation, number of autoimmunity, routine immunological tests, and JMF criteria are not predictive of underlying PIRD. Early diagnosis with exome sequencing alters the prognosis and opens new therapeutic avenue.
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Abbreviations
- AID:
-
Autoimmune disease
- JMF:
-
Jeffrey Modell Foundation
- PID:
-
Primary immunodeficiency
- PIRD:
-
Primary immune regulatory disorders
- IEI:
-
Inborn errors of immunity
- LRBA:
-
Lipopolysaccharide (LPS)-responsive and beige-like anchor protein deficiency
- STAT1/3 GOF:
-
Signal transducer and activator of transcription 1/3 gain of function
- CTLA4:
-
Cytotoxic T-lymphocyte-associated protein 4 haploinsufficiency
- ACP5:
-
Acid phosphatase 5
- NFKB1/2:
-
Nuclear factor NF-kappa-B subunit 1/2
- NLRP12:
-
NACHT, LRR, and PYD domains-containing protein 12
- CARD11 GOF:
-
Caspase recruitment domain family member 11
- RTEL1:
-
Regulator of telomere elongation helicase 1
- NCF2:
-
Neutrophil cytosolic factor 2
- ATM:
-
Ataxia-telangiectasia mutated
- RAG1:
-
Recombination activating gene 1
- BTK:
-
Bruton tyrosine kinase
- IL12RB1:
-
Interleukin 12 receptor beta subunit 1
- CHAPEL:
-
Hyperactivation of complement, angiopathic thrombosis, and protein-losing enteropathy
- FOXP3:
-
Forkhead box P3
- PIK3CD:
-
Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta
- CD40L:
-
Cluster of differentiation 40 ligand
- ADA2:
-
Adenosine deaminase 2 deficiency
- PCR:
-
Polymerase chain reaction
- EBV:
-
Epstein-Barr virus
- CMV:
-
Cytomegalovirus
- ANA:
-
Anti-nuclear antibody
- GAD:
-
Glutamic acid decarboxylase
- TTgIgA:
-
Tissue transglutaminase immunoglobulin A
- DCT:
-
Direct Coombs test
- TPO:
-
Thyroid peroxidase
- CBC:
-
Complete blood count
- TNFAIP3:
-
Tumor necrosis factor, alpha-induced protein 3
- DNASE1:
-
Deoxyribonuclease I
- MEFV:
-
MEditerranean FeVer
- IL2RB:
-
Interleukin-2 receptor subunit beta
- LYST:
-
Lysosomal trafficking regulator
- ERCC6:
-
ERCC excision repair 6, chromatin remodeling factor
- PRF1:
-
Perforin 1
- SUMO4:
-
Small ubiquitin like modifier 4
- VUS:
-
Variant of uncertain significance
- GI:
-
Gastrointestinal
- JAK:
-
Janus kinase
- CMC:
-
Chronic mucocutaneous candidiasis
- VEOIBD:
-
Very early onset inflammatory bowel disease
- DM:
-
Diabetes mellitus
- HBA1C:
-
Hemoglobin A1c
- HSCT:
-
Hematopoietic stem cell transplant
- CVID:
-
Common variable immunodeficiency
- IVIG:
-
Intravenous immunoglobulin
- ACMG:
-
American College of Medical Genetics
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Acknowledgements
We would like to acknowledge Dr. Zinet Currimbhoy who started the immunology department at B. J. Wadia Hospital for Children in early 2000s and continued to support and mentor the department till her death in 2021. Dr. Sangeeta Mudaliar, Dr. Purva Kanvinde, Dr. Ritika Khurana, Dr. Ira Shah, Dr. Sudha Rao, Dr. Rajesh Joshi, Dr. Sikha Agarwal, Dr. Manish Shah, Dr. Alpana Ohri, Dr. Laxmi Shobhavat, Dr. Rekha Solomon, Dr. Shilpa Kulkarni, and Dr. Ambreen Pandrowala from Bai Jerbai Wadia hospital for children for patient referral and management.
Funding
The study was partly funded by Indian Council of Medical Research (ICMR), New Delhi, India, under the Centre of Excellence in PID project (vide Grant No. 61/02/2012/IMM/BMS).
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Vaishnavi V Iyengar conceptualized and designed the study, collection and analysis of data, drafted the initial manuscript, reviewed and revised the manuscript. Akshaya Chougule collected data, reviewed and revised the manuscript. Vijaya Gowri collected data, carried out the initial analysis, reviewed and revised the manuscript. Prasad Taur collection of data, carried out the initial analysis, reviewed and revised the manuscript. Shakuntala Prabhu and Minnie Bodhanwala supervised data collection and critical revision of article. Manisha Madkaikar immunological work-up of patient, reviewed and revised the manuscript. Mukesh M Desai conceptualized the study, supervision of study, interpretation of data and critical revision of article.
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Venkatachari, I.V., Chougule, A., Gowri, V. et al. Monogenic inborn errors of immunity in autoimmune disorders. Immunol Res 71, 771–780 (2023). https://doi.org/10.1007/s12026-023-09391-3
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DOI: https://doi.org/10.1007/s12026-023-09391-3