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This review summarizes recent findings about the multi-site differentiation of tissue regulatory T cells, emphasizing the pivotal role of epigenetic remodeling, but it reports no new clinical results.

This study suggests that biallelic loss of the Hedgehog signaling repressor Patched alone in Keratin 5+ epidermal cells is insufficient to drive basal cell carcinoma development unless exogenous stimuli trigger accumulation of BCC precursor cells.

This study found that acute stress can cause rapid hair loss by triggering necrosis in hair follicle cells and initiating autoimmunity, revealing a mechanism where stress-induced nerve activity leads to tissue damage and immune system activation.

This review describes how the skin can form its own immune response through dermal tertiary lymphoid organs, which function independently of traditional lymph nodes, potentially offering new insights into skin health care and treatments.

This study developed PiSCES biosignatures that distinguished alopecia areata patients from controls, revealing enhanced basal TCR signaling and a potential disease-specific signaling network signature.

This study found a specific T cell receptor that may be key in carbamazepine-induced Stevens-Johnson syndrome and toxic epidermal necrolysis, suggesting potential therapeutic targets.

This study found that human skin grafted onto certain immunodeficient mice resulted in proliferative scars with characteristics similar to human hypertrophic scars, suggesting these models may better represent the condition's natural history.

Ritlecitinib reduces alopecia areata symptoms by blocking JAK3/TEC signaling and T-cell activity.

A specific type of immune cell plays a key role in causing alopecia areata and could be a target for treatment.

This study indicates that CD4 protein may have a functional role in basal cell-like keratinocytes through TCR/CD3-independent signaling, affecting their proliferation, differentiation, and migration.

This study provides a detailed analysis of cell subpopulations in a mouse model of wound-induced hair follicle regeneration, revealing specific cellular dynamics and heterogeneity that may influence hair follicle neogenesis.

This study suggests that NKG2D+ Vδ1 T cells may contribute to hair follicle pathology in alopecia areata by recognizing stressed keratinocytes and inducing immune privilege collapse.

This review highlights recent insights into how IL-15 influences T cell responses and contributes to immunopathogenesis in various diseases, suggesting its crucial role in TCR-independent activation and potential in optimizing therapeutic strategies.

This review suggests that mucosa-associated invariant T cells may regulate the host response to SARS-CoV-2 and could be potential targets for COVID-19 management, but it reports no new clinical results.

This study found that γδ T cells in the skin contribute to wound healing after vaccinia virus infection by promoting cytokine and growth factor induction, without affecting virus replication control.

This open-label study found that oral tofacitinib led to significant hair regrowth in patients with moderate-to-severe alopecia areata, supported by changes in gene expression and T cell dynamics.

This study examined 16 sporadic trichoblastic tumors and found that although one showed malignant transformation, clinical follow-up revealed no residual or metastatic disease. RNA sequencing indicated a high tumor mutational burden and absence of a UV-related signature, helping to distinguish these tumors from similar growths.

In this case report, the authors suggest that a novel enhancer element's translocation near the TRPS1 gene may contribute to the TRPS phenotype, expanding understanding of the syndrome's genetic basis.

This study reported that genetic changes in trichilemmal carcinoma resemble those in other skin cancers, with TP53 mutations associated with aggressive clinical outcomes.

This study reported genetic mutations in trichilemmal carcinoma similar to those found in other skin cancers, including TP53 mutations associated with aggressive disease.

Long-standing benign tumors can become cancerous, especially in people with weakened immune systems.

This study found that trichilemmal carcinoma shares genetic changes with other skin cancers, suggesting a similar pathogenesis, particularly in those with aggressive clinical courses linked to TP53 mutations.

This study found that a specific T-cell receptor motif associated with lipid-antigen stimulation may play a role in the pathogenesis of folliculotropic mycosis fungoides.

This review discusses how increased gene copy number for telomerase components may contribute to telomerase up-regulation in cancer cells, although the exact mechanisms are not fully understood.

This study revealed distinct cellular and transcriptomic differences among various subtypes of cutaneous T-cell lymphoma, particularly highlighting characteristics unique to folliculotropic mycosis fungoides.

This study found that chromosomal microarray analysis identified copy number variations in 12% of patients with dysmorphic features and congenital anomalies, demonstrating its potential as a diagnostic tool, especially for rare CNVs and immune deficiency linked to the deletion of CTLA4.

This case study describes a patient with Turner syndrome who, despite lacking many classic features, presented with multiple autoimmune diseases, suggesting a link between complex X chromosome rearrangements and increased autoimmune risk.

This study found that activating CXCR2 on ras-transformed keratinocytes promotes migration and tumor development in a mouse skin model.