Evidence map›Paper›PMID 42651086›Full record

ArticleBrain sciences2026

Peripheral Hematological and Immune-Endocrine Markers in Children with Specific Learning Disorder: An Exploratory Retrospective Case-Control Study.

Dilek Altun Varmış, Cumali Yüksekkaya, Hülya Binokay, Serkan Güneş, Nazmiye İnce, Elif Koçak, Elif Gözde Yüce Antepüzümü, Kübra Şahin, Esra Erol Tanrıkulu

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Article in Brain sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Dilek Altun VarmışDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.ORCID 0000-0001-5968-4740
Cumali YüksekkayaDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.ORCID 0009-0002-9174-3469
Hülya BinokayDepartment of Biostatistics, Çukurova University, 01330 Adana, Türkiye.ORCID 0000-0002-0162-4574
Serkan GüneşDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.
Nazmiye İnceDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.ORCID 0000-0002-4874-5269
Elif KoçakDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.
Elif Gözde Yüce AntepüzümüDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.ORCID 0009-0008-3204-5568
Kübra ŞahinDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.
Esra Erol TanrıkuluDepartment of Child and Adolescent Psychiatry, University of Health Sciences, Adana City Training and Research Hospital, 01060 Adana, Türkiye.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpecific learning disorder (SLD), termed "specific learning disability" in the Human Phenotype Ontology (HP:0001328), is a heterogeneous neurodevelopmental disorder, and the association between peripheral biological changes and cognitive function remains not well understood. Peripheral hematological and immune-endocrine biomarkers and their relationships with neuropsychological evaluations were evaluated in children with SLD.

methodsIn this retrospective case-control study, we evaluated the peripheral biomarkers of a complete blood count and biochemical panel in 103 children with SLD and 102 well-child outpatient controls. Within the SLD group, we examined the association of systemic inflammatory indices with cognitive domains as assessed by the Wechsler Intelligence Scale for Children-Revised.

resultsGroup comparisons revealed modest peripheral changes, including reduced mean platelet volume (MPV) and increased eosinophil counts, that persisted after false discovery rate correction. Both differences remained significant after adjustment for age and sex. Inflammatory indices from complete blood count showed poor discriminative validity and were not strongly related to the global intelligence quotient. Exploratory analyses revealed only nominal, domain-specific associations between systemic inflammation indices and particular Wechsler subtests for verbal abstraction and visuospatial organization that did not survive multiple-comparison correction.

conclusionsThe findings indicate a selective peripheral hematological pattern in SLD rather than evidence of generalized systemic inflammation. The evaluated indices showed limited discriminative utility and were not independently associated with global cognitive performance after multiple-testing correction. They should not be considered screening or diagnostic biomarkers for SLD. The selective pattern of lower MPV and higher eosinophil count observed in children with SLD appears to be novel but should be considered preliminary and requires independent confirmation in larger, prospectively recruited groups.

Indexed as

cognitive functionmean platelet volumemolecules to cognitionneuropsychological assessmentperipheral biomarkersspecific learning disordersystemic inflammationtranslational neuroscienceWechsler Intelligence Scale for Children—Revised

Identifiers

PMID42651086
PMCPMC13510338

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