Education Qualification

1. MBBS from Adichunchanagiri Institute of Medical Sciences, affiliated to Rajiv Gandhi University of Health Sciences, Karnataka, India in March 2015
2. EULAR Fellowship in Pediatric Rheumatology in May 2019
3. MD Pediatrics from Kasturba Medical College, Mangaluru, Manipal Academy of Higher Education in June 2020
4. Senior Residency at Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India, from August 2020 to July 2021
5. Fellowship in Paediatric Immunology and Rheumatology at Aster CMI Hospital, Bengaluru from April 2022 to March 2024

Training and workshops attended

1. Attended Primary Immune Deficiency Workshop held at PGIMER, Chandigarh, in September 2018
2. Attended PGI-IPSID Primary Immunodeficiency Diseases Workshop supported by APSID-APAAACI in June 2020
3. Attended the ACARE Preceptorship on Recurrent Angioedema titled "State of the art management of recurrent angioedema and hands-on training" held at PIGMER, Chandigarh, from 4th to 5th February 2023.

Presentations

• APSID Webinar in April 2026, Title: Silvery Hair, Damaged Lungs, and Bleeding Diathesis: A Rare Triad in an 8-Year-Old
• Jharkhand Pedicon, Bokaro Steel City, October 2024
  Talk on “A Pediatrician’s Approach to Inborn errors of Immunity”
• Indian Academy of Pediatrics Ranchi CME, July 2024
  Talk on “Approach to Arthritis”
• Jharkhand Rheumatology Conference, Ranchi, June 2024
  Talk on “Approach to Rheumatic and Immunological Diseases in Children”
• Fifth Asia-Pacific Society for Immunodeficiency (APSID) Congress, Tokyo, Japan, March 2024
  Two oral presentations titled “Polyautoimmunity In An Infant With Low T-Cells: An Interesting Case Of Cd3ε Deficiency And Review Of Literature” and “Profile Of Autoimmunity and Immune Dysregulation in 360 Patients with Inborn Errors Of Immunity At A Tertiary Care Center In South India”
  Poster titled “Clinical and molecular profile of 20 patients with DOCK8 deficiency: A single-centre experience from Southern India”
• Seventh National Conference of Indian Society of Primary Immunodeficiency, Lucknow, February 2024.
  Two oral presentations titled “Clinical and molecular profile of 20 patients with DOCK8 deficiency” and “Clinical spectrum and outcomes of ten patients with LATAIE and five patients with CHAI: A multi-center experience”
• ESID Juniors Journal Club and Clinical Case presentations, October 2023.
  Recurrent pyoderma gangrenosum in two siblings – First report of its kind!
• APSID Focussed Webinar on ‘IEI due to GOF or LOF Defects’, September, 2023
  Oral presentation titled “Immune dysregulation and atypical mycobacteria – The tussle between GOF and LOF!”
• PRES, Netherlands, 2023
  Short communication in Young Investigators Meeting (YIM) - Profile Of Autoimmunity and Immune Dysregulation in 360 Patients with Inborn Errors Of Immunity At A Tertiary Care Center In South India
  Poster presentation in PRES:
  • Early onset systemic lupus erythematosus: A case series of four patients with C1Q deficiency
  • Spectrum of Systemic Autoinflammatory diseases – Experience from a tertiary care center in South India
  • Correlation of disease activity and psychiatric burden of Juvenile Idiopathic Arthritis-Interim analysis of a Prospective Observational Study
  • Profile Of Autoimmunity and Immune Dysregulation in 360 Patients with Inborn Errors Of Immunity At A Tertiary Care Center In South India – Selected for the poster tour
• 6th International Conference on Inborn Errors of Immunity, Gurugram, March 2023
  Oral presentation titled “A case series of five patients with Activated PI3 Kinase Delta Syndrome: A multicentre center experience"
  Poster presentation:
  • Two cases of CBM-opathies—An expanding Spectrum of Inborn Errors of Immunity
  • Recurrent pyoderma gangrenosum in three patients with Otulopenia – First of its kind report!
  • Profile of 319 Patients With Inborn Errors Of Immunity: A 5-year experience at a tertiary care centre in Southern India
  • Profile Of Autoimmunity and Immune Dysregulation in 319 Patients with Inborn Errors Of Immunity At A Tertiary Care Center In South India
• APSID Online Meeting, December, 2022
  Best poster award for the poster titled "Infant presenting with Recurrent Infections and High T cell Counts: An interesting case report of MALT1 deficiency" on 14th December 2022 in APSID online meeting.
• NCPR, Bangalore, December, 2022
  Poster Presentation:
  • Profile of pediatric Systemic Lupus Erythematosus with a special reference to Lupus Nephritis: A five-year single-centre experience from Southern India
  • Clinical patterns and causes of uveitis – Experience from a Tertiary Care Centre in Southern India
  • Bilateral axillary aneurysms with early thrombotic changes in an infant: The bad sequelae of missed Kawasaki disease!
  • Juggling biologics in a child with Tumor Necrosis Factor Receptor Associated Periodic Syndrome – What is the way forward?
• Indian Society Of Primary Immune Deficiency (ISPID) IEI Conference, Chandigarh, November, 2022
  a. Best poster award won for "Polyautoimmunity in an Infant with No T-Cells: an Interesting Case of Cd3ε Deficiency and Review Of Literature" at IEI 2022, organized by ISPID on November 26-27th, 2022, at PGIMER, Chandigarh.
  Other posters:
  • Clinical profile of 14 patients with DOCK8 deficiency: A single-centre experience from Southern India
  • Autoimmunity in B Cell Defects - An experience from a tertiary care center in South India
• Annual ISKD Conference, Hyderabad, November, 2022
  Oral presentation: Bilateral Axillary Aneurysms in an Infant: Sequelae of Missed Kawasaki Disease
  Poster Publication:
  • Infantile versus Non-infantile Kawasaki Disease – A comparative analysis from a tertiary care centre in South India
  • Kawasaki disease versus Multi-system Inflammatory Syndrome in Children (MISC) – A multicentric comparative analysis from South India
  • Acquired phimosis in an infant with IVIG-resistant Kawasaki Disease: A rare occurrence

Publications

22. Bhattad S, Singh N, Mohite RS, Janardhanan J, JT Srikanta, Shukla A, et al. Clinical and immunological spectrum of five patients with activated phosphoinositide 3-kinase δ syndrome 1: A multicentric study from India. J Hum Immun. 2026:2(4): e20250251.
23. Bhattad S, Gil HM, Ruchinskas A, Stinson JR, Staines Boone AT, Mohite RS, Janardhanan J, Singh N, Mariskanish C, Choi JM, Basaria S, Ye X, Snow AL, Markle JG. B-cell lymphocytosis and reprogramming due to biallelic CARD11 mutations. J Allergy Clin Immunol. 2025:S0091-6749(25)02188-8. doi: 10.1016/j.jaci.2025.12.991. PMID: 41456721.
24. Qureshah FA, Pen JL, de Weerd NA, Moncada-Velez M, Materna M, Lin DC, Milisavljevic B, Vianna F, Bizien L, Lazaro Lorenzo L, Lecuit M, Pommier JD, Keles S, Ozcelik T, Pedraza-Sanchez S, Prost ND, Zein LE, Hammoud H, Ng LFP, Halwani R, Saheb Sharif-Askari NS, Lau YL, Tam AR, Singh N, Bhattad S, Berkun Y, Chantratita W, Aguilar-López R, Shahrooei M, COVID-19 HGE Consortium, SEAe Consortium, Abel L, Bastard P, Jouanguy E, Béziat V, Zhang P, Rice CM, Cobat A, Zhang SY, Hertzog PJ, Casanova JL, Zhang Q. A common form of dominant human IFNAR1 deficiency impairs IFN-α and -ω but not IFN-β-dependent immunity . J. Exp. Med. 2024.
25. Singh N, Ranganath P, Jayaram A, Jhawar P, Kotecha U, Janardhanan J et al. Clinical and molecular profile of 20 patients with DOCK8 deficiency-a single-center experience from Southern India. Immunol Res. 2024;73(1):8.
26. Singh N, Vidya MN, Furtado S, Bhattad S. Refractory Cutaneous Vasculitis in a Young Child with Granulomatous Polyangiitis Successfully Treated with Rituximab: A Case Report. Indian Dermatology Online Journal 15(6):p 1051-1052, Nov–Dec 2024.
27. Singh N, Janardhanan J, Kale S, Krishnegowda J, Kumar H, Naushad Ali SM, Arigela K, Ginigeri C, Bhattad S. Severe lupus enteritis: A diagnostic and therapeutic enigma. Lupus. 2024 Oct 3:9612033241290579. doi: 10.1177/09612033241290579. Epub ahead of print. PMID: 39361807.
28. Bhattad S, Singh N, Janardhanan J, Kumar H, Ali SMN, Arigela K et al. Profile of juvenile systemic lupus erythematosus patients with a special reference to monogenic lupus and lupus nephritis: a cross-sectional study. Rheumatol Int. 2024 Aug 24. doi: 10.1007/s00296-024-05696-0. Epub ahead of print. PMID: 39180524.
29. Guha S, Suri D, Balan S, Janarthanan M, Agarwal M, Viswanathan V, Gupta A, Hazarika RD, Gummadi A, Sudhakar M, Pal SR, Raghuram J, Rao AP, Singh N, Aggarwal A, Bhattad S. Exploring clinical features and therapeutic outcomes in Indian children with mixed connective tissue disease: A multicenter study. Int J Rheum Dis. 2024;27(6):e15243. doi: 10.1111/1756-185X.15243. PMID: 38925615.
30. Singh N, Janardhanan J, Kale S, Kumar H, Ginigeri C, Bhattad S. Giant coronary and systemic aneurysms in an infant with missed Kawasaki disease and the role of apixaban. Prog Pediatr Cardiol. 2024; 72(6):101703.
31. Janardhanan J, Singh N, Bhattad S. Osteomyelitis-Like Presentation In A Young Girl With Hyperphosphatemic Familial Tumoral Calcinosis – A Case Report. Int J Med Sci Curr Res. 2023; 6(6):342-346.
32. Bhattad S, Singh N. Pulmonary manifestations in primary immunodeficiency. Indian J Pract Pediatr. 2023; 25(2):178 – 187.
33. Bhattad S, Mohite RS, Singh N, Kotecha U, Jhawar P, Ramprakash S, et al. Profile of 208 patients with inborn errors of immunity at a tertiary care center in South India. Clin Exp Med. 2023;23(8):5399-5412.
34. Singh N, Bhattad S. Lymphoproliferation: How do You Evaluate for an Immune Deficiency? Pediatr Inf Dis. 2023; 5 (3):102-104.
35. Mortimer PM, Nichols E, Thomas J, Shanbhag R, Singh N, Coomber EL,et al. A novel mutation in EROS (CYBC1) causes chronic granulomatous disease. Clin Immunol. 2023;255:109761.
36. Bhattad S, Libre M, Choi JM, Mohite RS, Singh N, Markle JG. Hermansky-Pudlak syndrome with early onset inflammatory bowel disease due to loss of dysbindin expression. Eur J Med Genet. 2023;66(7):104786.
37. Bhattad S, Singh N. Inborn errors of Immunity. IAP Case Based reviews in Pediatric Allergy. Jaypee Brothers Medical Publishers (P) Ltd. 2023.p247-256.
38. Jhawar P, Singh N, Bhattad S. Prevention is Better than Cure! Can We prevent Primary Immune Deficiency Diseases?. Pediatr Inf Dis. 2023;5(2):63–64.
39. Bhattad S; Mohite R S; Singh N. Growth and Development in Children with Rheumatic Diseases: Maintaining a Balance between Drugs and Disease Activity. Indian J Rheumatol:10.4103/injr.injr_54_22, October 07, 2022. | DOI: 10.4103/injr.injr_54_22.
40. Singh N, Bhattad S. Autoimmunity and Inborn Errors of Immunity: Two Faces of the Same Coin!. Pediatr Inf Dis. 2022; 4 (4):153-155.
41. Singh N, Rao SS, Mithra P, Manjrekar P, Kamath N, Baliga BS. Improving Underweight Mothers' Essential Newborn Care During Early Infancy: A Single-Blinded, Parallel-Randomized, Controlled Trial. J Pediatr. 2022;244:72-78. e2.
42. Neha, Rao. SS, Baliga BS, Mithra P, Manjrekar P, Kamath N. Influencing variables for fetal growth in malnourished mothers: a nested case-control study.Clin Epidemiol Glob Health. 2020; 8: 581-585.
43. Neha, Ravikiran SR, Manya S, Baliga K, Bhat KG. Acute Liver Injury, Rhabdomyolysis and Acute Renal Failure in a Toddler due to Multiple Stings by Vespa affinis. J Clin of Diagn Res. 2019;13:1–3.