Kumar Rangarajalu

Kumar Rangarajalu


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 January 2025 in Journal of Audiology and Otology
Verified
Journal Article
Open access
PDF file
SJSwetha J Jayakumar
Swetha J Jayakumar
ASArulmozhi Sakthignanavel
Arulmozhi Sakthignanavel
AMAARTHI Manoharan
AARTHI Manoharan
KRKumar Rangarajalu
Kumar Rangarajalu
PAPriyadharshini Arunagiri
Priyadharshini Arunagiri
RSRavikumar Sambandam
Ravikumar Sambandam
Background and Objectives: Hereditary hearing loss is the most common genetic disorder in children. Nearly 120 genes associated with auditory impairment have been identified. Although the disease is clinically and genetically complex, the chances of identifying deafness-causing loci increase when studying consanguineous families.Materials and Methods: Whole-exome sequencing was performed to identify genetic variants underlying sensorineural hearing loss in affected individuals from a family with third-degree consanguineous practices.Results: A homozygous deletion of 250.285 kb was identified in the 16p12.2 region encompassing three genes, METTL9, IGSF6, and OTOA, and a partial deletion of the NPIPB4 gene co-segregated within the family.Conclusions: This study highlighted the genetic heterogeneity of hearing loss in consanguineous families. Future research should focus on the OTOA mutational spectrum in South Indian populations with hearing loss.

21 November 2025 in Health Science Reports
Verified
Journal Article
Open access
PNPRITHIVIRAJ NAGARAJAN
PRITHIVIRAJ NAGARAJAN
MRMani Rajarathinam
Mani Rajarathinam
AJArun Daniel Jayakumar
Arun Daniel Jayakumar
PTPrasad Thirumal
Prasad Thirumal
KRKumar Rangarajalu
Kumar Rangarajalu
AHAnusheela Howlader
Anusheela Howlader
Background and Aim: Diabetic foot ulcers (DFUs) pose a significant challenge in the management of chronic wounds, characterized by a high risk of infection and severe complications, including potential limb amputation. The limitations of conventional treatments have sparked interest in regenerative therapies, particularly the use of adipose‐derived stem cells (ADSCs). which possess significant potential across various medical fields for enhancing tissue repair and modulating immune responses. This perspective critically evaluates the potential of ADSCs for treating DFUs while exploring their broader implications in regenerative medicine. Methods: This perspective incorporates insights from a comprehensive literature review, with searches conducted on platforms such as Google Scholar, PubMed, and Scopus. The selected studies focus on the regenerative efficacy, safety, and clinical applications of ADSCs in wound healing, emphasizing rigorous methodologies that support reliable conclusions. Results: ADSCs exhibit significant promise in promoting tissue regeneration, stimulating angiogenesis, and modulating immune function—mechanisms that are beneficial not only for patients with DFUs but also for those with other chronic and non‐healing wounds. Nevertheless, challenges persist, including the risk of tumorigenesis, particularly in patients with a history of cancer, as well as variability in therapeutic outcomes due to donor characteristics and processing techniques. Conclusion: While ADSCs represent a promising therapeutic option for DFUs and provide valuable insights for a wider array of chronic wound therapies, their clinical application requires careful consideration of safety concerns, including risks of tumor formation and immune response issues. Future advancements in cell processing and well‐structured clinical trials will be essential to ensuring efficacy across diverse populations in the broader context of regenerative medicine.

27 March 2025 in Medicina
Verified
Journal Article
Open access
PDF file
IGIrisappan Ganesh
Irisappan Ganesh
IKIlangovan Karthiga
Ilangovan Karthiga
MMManoranjani Murugan
Manoranjani Murugan
KRKumar Rangarajalu
Kumar Rangarajalu
Ballambhattu Vishnu BhatBallambhattu Vishnu Bhat
Ballambhattu Vishnu Bhat
RSRavikumar Sambandam
Ravikumar Sambandam
Aneuploidy is increasingly recognized globally as a common cause of miscarriage among expectant mothers. The existing prenatal screening techniques for detecting aneuploidy have several limitations. The ability to diagnose aneuploidy early in a non-invasive manner is not feasible with the current screening methods, as they may produce false positive or false negative results. Recently, the widely used gene editing tool CRISPR/Cas has shown great promise in diagnostics. This review summarizes the prenatal screening tests used in the first trimester to assess aneuploidy conditions. Additionally, we discuss the advantages and disadvantages of molecular diagnostic tests, including the benefits and challenges of CRISPR/Cas-based trisomy detection. Thus, the proposed prenatal screening using CRISPR/Cas could provide significant benefits to expectant mothers by potentially enabling the early diagnosis of trisomy, helping to prevent miscarriage and birth defects. Furthermore, it opens new avenues for research, allowing clinicians and researchers to develop, optimize, and implement CRISPR/Cas-based prenatal screening assays in the future.

8 November 2022 in Health Science Reports
Verified
Journal Article
Open access
PNPRITHIVIRAJ NAGARAJAN
PRITHIVIRAJ NAGARAJAN
LLLEENA RAJATHY PORT LOUIS
LEENA RAJATHY PORT LOUIS
AHAnusheela Howlader
Anusheela Howlader
KRKumar Rangarajalu
Kumar Rangarajalu

30 June 2022 in Gomal Journal of Medical Sciences
Verified
Journal Article
Open access
PDF file
PNPRITHIVIRAJ NAGARAJAN
PRITHIVIRAJ NAGARAJAN
AHAnusheela Howlader
Anusheela Howlader
KRKumar Rangarajalu
Kumar Rangarajalu
SARS-CoV-2 Omicron variant of concern (VOC) has rapidly expanded worldwide since it first emerged on November 24, 2021, in Southern Africa and has already reached every continent. Many issues surrounding Omicron remain unresolved, including the severity of the disease and the extent to which currently available vaccinations effectively prevent COVID-19 infection. Compared to the previous VOC (Delta version), more mutations were detected, which may address Omicron’s characteristics.

7 January 2026 in Preprints.org
Verified
Preprint
Open access
PDF file
SJSwetha Jayakumar
Swetha Jayakumar
KRKumar Rangarajalu
Kumar Rangarajalu
RSRavikumar Sambandam
Ravikumar Sambandam
Gurudeeban SelvarajGurudeeban Selvaraj
Gurudeeban Selvaraj
Consanguineous marriages heighten the risk of recessive genetic disorders, including congenital sensorineural hearing loss (CSHL), by increasing the prevalence of homozygous pathogenic variants. However, limited availability of large-scale annotated variant datasets remains a major challenge in developing accurate machine learning (ML) classifiers for variant pathogenicity prediction in such contexts. In this study, we propose a novel approach leveraging synthetic whole exome sequencing (WES) data to develop a robust ML model for distinguishing pathogenic from non-pathogenic variants specific to consanguineous hearing loss cases. We first applied a rule-based probabilistic framework to simulate clinically realistic distributions of variant features, including chromosomal position, allele frequency, CADD, SIFT, PolyPhen, and ClinVar-like pathogenicity labels. To enhance data diversity and mitigate bias from manually defined rules, we employed rule based probabilistic simulation to generate complex, high-fidelity synthetic variants that preserved conditional dependencies across multiple annotation layers. A balanced dataset of 5000 variants was generated and used to train and evaluate several machine learning models, including XGBoost, random forest, and logistic regression. The models achieved high accuracy and strong discriminative power, as measured by ROC-AUC and F1-score, validating the feasibility of synthetic data in precision genomics. Our results demonstrate the potential of combining rule-based priors with generative models to overcome data scarcity in rare genetic disorders and enable ML-based variant classification in consanguineous populations. This synthetic data–driven pipeline offers a scalable and ethical alternative for training predictive models in underrepresented genetic conditions, ultimately facilitating early diagnosis and personalized healthcare interventions for inherited hearing loss.