This article reports a child with cardioaciocutaneous syndrome (CFCS) caused by a rare microdeletion of chromosome 19p13.3, and a literature review is conducted. The child had unusual facies, short stature, delayed mental and motor development, macrocephaly, and cardiac abnormalities. Whole-exome sequencing identified a 1 040 kb heterozygous deletion in the 19p13.3 region of the child, which was rated as a "pathogenic variant". This is the first case of CFCS caused by a loss-of-function mutation reported in China, which enriches the genotype characteristics of CFCS. It is imperative to enhance the understanding of CFCS in children. Early identification based on its clinical manifestations should be pursued, and genetic testing should be performed to facilitate diagnosis.
Humans ; Chromosome Deletion ; Chromosomes, Human, Pair 19/genetics* ; Ectodermal Dysplasia/genetics* ; Facies ; Failure to Thrive/genetics* ; Heart Defects, Congenital/genetics*

Ectodermal dysplasia is a group of hereditary diseases characterized by developmental defects of ectodermal structures. Its oral manifestations mainly center on congenital missing teeth, abnormal tooth morphology, and maxillofacial bone developmental disorders, which seriously affect the masticatory function, maxillofacial development, and mental health of affected children. In this article, the multidimensional diagnostic strategy system for children with ectodermal dysplasia and the related progress of early oral prosthodontic treatment methods were systematically reviewed to provide references for clinicians in the diagnosis and treatment of children with ectodermal dysplasia.
Child ; Humans ; Anodontia ; Ectodermal Dysplasia/diagnosis* ; Prosthodontics ; Tooth Abnormalities/therapy*

OBJECTIVE: To investigate the clinical characteristics and genetic etiology of eight members from a pedigree affected with epidermolysis bullosa (EB). METHODS: A girl presented with recurrent, unexplained blisters on the palmar and plantar skin for 8 years and sought medical care in October 2024 was enrolled as the study subject. A retrospective study was conducted to collect the child's clinical data, and a detailed medical history was taken for her family members. Peripheral venous blood samples were collected from the child and her parents for genomic DNA extraction. Whole-exome sequencing (WES) was performed. Candidate variant was validated by Sanger sequencing. The pathogenicity of the candidate variants was classified in accordance with the Standards and Guidelines for the Interpretation of Sequence Variants issued by the American College of Medical Genetics and Genomics (ACMG, hereinafter referred to as the "ACMG Guidelines"). This study was approved by the Medical Ethics Committee of the 980th Hospital of the Joint Logistics Support Force of the Chinese People's Liberation Army (Ethics No.: 2019-KY-01). RESULTS: The proband was an 8-year-and-4-month-old female. Four months after birth, she had developed recurrent blisters on the palmar and plantar skin without obvious triggers, accompanied by significant pain. Symptoms were more severe in summer and slightly relieved in winter. Although symptomatic treatment could alleviate the symptoms, she was unable to participate in physical activities. A detailed family history revealed that her great-grandfather, grandfather, father, half-brother, great-aunt, great-aunt's son and two grandsons, as well as her aunt and aunt's son, had similar clinical manifestations. WES revealed that she has harbored a heterozygous c.556-16(IVS1)C>G (NM_000424.4) variant in the KRT5 gene, which was identified as a splice site mutation. Reverse transcription sequencing confirmed that this variant can disrupt normal splicing, resulting in retention of a 15 bp sequence in the first intron. Sanger sequencing demonstrated that the variant was inherited from the father, and the 6 aforementioned relatives with similar phenotypes have all carried the same variant (the great-grandfather, grandfather, and great-aunt had declined genetic testing due to advanced age). Based on the ACMG guidelines, this variant was classified as pathogenic (PS3+PM2_Supporting+PP3+PP1_strong). CONCLUSION Patients with epidermolysis bullosa simplex may exhibit clinical features including blistering on the skin or mucous membranes of friction-prone sites (e.g. hands, feet, elbows, and knees) following minor trauma or friction, as well as increased skin fragility. The c.556-16(IVS1)C>G (rs376462752) variant of the KRT5 gene probably underlay the pathogenesis of EB in this child. Above findings have enriched the mutational spectrum of the KRT5 gene.
Child ; Female ; Humans ; Infant ; Male ; China ; Epidermolysis Bullosa Simplex/genetics* ; Exome Sequencing ; Keratin-5/genetics* ; Mutation ; Pedigree ; Retrospective Studies ; East Asian People/genetics*

OBJECTIVE: To explore the clinical and genetic characteristics of five fetuses with Harlequin ichthyosis (HI). METHODS: Five fetuses with HI diagnosed at Guangdong Women and Children Hospital between 2017 and 2024 were selected as study subjects. Clinical and laboratory data were collected and reviewed. Whole exome sequencing (WES) was carried out, and candidate variants were verified by bioinformatic analysis. This study was approved by the Medical Ethics Committee of the hospital (Ethics No.: 202401024). RESULTS: The five fetuses had presented with ectropion, eclabium and contracture and flexion of fingers and toes. WES revealed that all had harbored compound heterozygous or homozygous variants of the ABCA12 gene. Among the eight types of variants, five were unreported previously. CONCLUSION The compound heterozygous or homozygous variants of the ABCA12 gene probably underlay the HI in the five fetuses. Clinicians should be vigilant about the possibility of HI in fetus with ectropion, eclabium, and contracture and flexion of fingers and toes.
Humans ; Ichthyosis, Lamellar/genetics* ; Female ; ATP-Binding Cassette Transporters/genetics* ; Pregnancy ; Genotype ; Phenotype ; Exome Sequencing ; Fetus ; Mutation ; Male ; Adult

OBJECTIVE: To explore the clinical phenotype and genetic etiology of a child with Ehlers-Danlos syndrome, spondylodysplastic type 2 (EDSSPD2). METHODS: A child who was admitted to the Children's Medical Center of the Affiliated Hospital of Guangdong Medical University in July 2024 for "delayed motor development for 1 and a half year" was selected as the study subject. Clinical data of the child was collected, including medical history, family history, and results of auxiliary examinations. Peripheral venous blood samples were collected from the child and his two brothers and both parents. Genomic DNA was extracted from the child and his family members and subjected to whole-exome sequencing (WES) and copy number variation (CNV) analysis. Sanger sequencing was used to verify the parental origin of the candidate variants. Multiple protein function prediction software tools, including SIFT, PolyPhen-2, and REVEL, were used to assess the impact of candidate variants on the protein function. Based on protein database information from UniProt, a two dimensional structural schematic of the target protein was generated. The pathogenicity of the variants was classified based on the guidelines from the American College of Medical Genetics and Genomics (ACMG). Relevant literature on the B3GALT6 gene variants leading to EDSSPD2 was retrieved from CNKI, Wanfang Data Knowledge Service Platform, and PubMed databases. The procedures followed in this study were reviewed and approved by the Medical Ethics Committee of Affiliated Hospital of Guangdong Medical University (Ethics No.：PJ2021-097). RESULTS: The proband was a 2-year-old male with an onset in infancy. The main clinical manifestations included loose skin, scoliosis and kyphosis, generalized hypermobility of joints, and motor developmental delay. WES has revealed two compound heterozygous variants of the B3GALT6 gene (NM_080605.4): c.766C>T (p.Arg256Trp) and c.962G>A (p.Cys321Tyr). Sanger sequencing verification showed that the c.766C>T and c.962G>A variants were respectively derived from his phenotypically normal father and mother. Bioinformatics analysis showed that for the c.766C>T (p.Arg256Trp) variant, the Arg256 site is located within the galactosyltransferase catalytic domain (GalT domain) of the β3GalT6 protein. According to the ACMG guidelines, the c.766C>T variant was classified as a likely pathogenic (PS3+PM2_supporting+PM3+PP3), and the c.962G>A was classified as a variant of unknown significance (PM2_Supporting+PM3+PP3). By following the pre-set literature retrieval strategy, a total of 12 articles related to B3GALT6 gene variants were identified (11 English and 1 Chinese), which involved a total of 71 patients. Among these, 4 reports (involving 20 patients) involved B3GALT6 gene variants leading to EDSSPD2. Among the 18 live-born EDSSPD2 patients (including the proband in this study), common clinical manifestations have included scoliosis (88.9%, 16/18), generalized hypotonia (83.3%, 15/18), and soft and lax skin (66.7%, 12/18). Some patients already showed skeletal abnormalities on prenatal ultrasound scan (22.2%, 4/18), while a few presented with cervical instability (16.7%, 3/18). One child had deceased at 18 months of age due to hypoxia caused by tracheomalacia and tracheal compression due to scoliosis. Among the 23 reported EDSSPD2 related B3GALT6 variant sites, missense variants were the most common (78.3%, 18/23), followed by nonsense variants (21.7%, 5/23). CONCLUSION Above finding has enriched the clinical and mutational spectra of EDSSPD2. Early genetic testing has important clinical value for the diagnosis, differential diagnosis, and genetic counseling of this disease.
Humans ; Male ; Ehlers-Danlos Syndrome/genetics* ; Pedigree ; N-Acetylgalactosaminyltransferases/genetics* ; Asian People/genetics* ; DNA Copy Number Variations ; Exome Sequencing ; Female ; Child ; Child, Preschool ; Phenotype ; Mutation ; China ; East Asian People ; Galactosyltransferases

Introduction: Epidermolysis Bullosa Pruriginosa (EBP) is a rare subtype of the inherited Dystrophic ~ Epidermolysis Bullosa spectrum of diseases and results from a gene mutation in COL7AL Though predominantly an autosomal dominant disease, autosomal recessive and even sporadic have been reported. Case Summary: Case Summary:We report a case of a 12-year-old Filipino male presenting with a chronic history of numerous scratching-induced blisters predominantly distributed on the extensor aspect of his arms and legs without concomitant oral lesions, nail dystrophy, or hair findings, and without a family history of similar lesions. Histopathologic assessment, Direct Immunofluorescence (DIF), and Indirect Immunofiuorescence (IIF) showed a subepidermal split with scant inflammatory infiltrates, no immunofluorescence, and absent userrated linear immunofluorescence at the dermal-side of the Salt Split Skin slide, respectively, which were all consistent with EBP. Enzyme-Linked Immunosorbent Assay (ELISA) for Anti-Collagen VII antibodies was slightly elevated, which may suggest an alternative diagnosis of Epidermolysis Bullosa Acquisita (EBA). This slight elevation may be due to the mutated Collagen Vil protein becoming antigenic and therefore provoking an immune response. To conclusively distinguish EBP from EBA, a COL7AI gene mutation analysis was recommended. With a diagnosis of EBP cannot totally rule out EBA, the patient was initially managed with dapsone monotherapy, counseled regarding behavioral modification to reduce scratching and trauma, advised wound care and close monitoring for the development of oropharyngeal lesions, and recommended for COL7A1 genetic mutation analysis. Conclusion This report demonstrates a case of EBP with elevated Anti-Collagen VII antibodies. The diistinction between EBP and EBA is important because this changes the management: EBP is largely supportive, while EBA may benefit from immunosuppressive therapy.
Epidermolysis Bullosa Pruriginosa ; Enzyme-Linked Immunosorbent Assay ; Epidermolysis Bullosa Acquisita

Lamellar Ichthyosis (LI) is a rare autosomal recessive disorder caused by mutations in genes, primarily TGM1, that affect skin barrier formation. It results in large, hyperpigmented, plate-like scales covering the entire body and persists throughout life. This case illustrates the chronic and debilitating nature of LI, highlights therapeutic approaches that improve quality of life, and emphasizes the importance of genetic testing in managing the condition.

Patient A, a 25-year-old female, and Patient B, a 22-year-old male, are Filipino siblings from non-consanguineous parents with no notable family history. Both were born encased in a collodion membrane that later revealed generalized erythema with large scales and deep fissures. As they aged, symptoms worsened, including reduced sweating, heat intolerance, ectropion, eclabium, cicatricial alopecia, palmoplantar hyperkeratosis, limited finger movement, and blurred vision from corneal scarring. Whole exome sequencing identified a homozygous pathogenic variant in the TGM1 gene (Arg396Cys). Their parents are carriers, giving future offspring a 25% risk of inheriting the condition. Acitretin therapy at 0.2 mg/kg/day, combined with topical keratolytics, led to significant improvement in symptoms and quality of life within four weeks.

Accurate diagnosis of ichthyosiform disorders requires thorough clinical documentation, family history, physical examination, and genetic findings. Effective management of lamellar ichthyosis needs a multidisciplinary approach, focusing on improving quality of life by addressing physical discomfort and social challenges. Genetic testing, especially Whole Exome Sequencing (WES), is crucial for precise diagnosis, genetic counseling, and informed family planning.

Junctional Epidermolysis Bullosa (JEB) is a rare inherited blistering disorder characterized by extreme skin fragility. It is associated with COL17A1 mutation that is critical for dermoepidermal adhesion. Effective management in resource-limited settings is challenging and focuses on wound care and trauma prevention to prevent complications and improve quality of life.

A 27-year-old Filipino female presented with recurrent blisters and erosions since infancy, accompanied by diffuse alopecia and anonychia of the toenails. On physical examination, she presented with multiple, well-defined, erythematous tense vesicles and bullae on the trunk, upper and lower extremities which were triggered by minor trauma to the skin. Skin punch biopsy was done revealing a subepidermal blistering dermatosis while direct immunofluorescence (DIF) and Enzyme-Linked Immunosorbent Assay (ELISA) tests for BP180, BP230, and type VII collagen were negative. Genetic testing was done and revealed compound heterozygous mutations in the COL17A1 gene, consistent with JEB. She was managed with non-adhesive dressings, sterile aspiration of blisters, and nutritional support. Despite the severity of her condition, the patient experienced significant improvement in wound healing and quality of life through meticulous wound care, trauma prevention and nutritional support.

This case highlights the unusual case of a 27-year-old Filipino female with JEB who has survived into adulthood, a rarity given the typically poor prognosis associated with severe forms of the disease.

Dystrophic epidermolysis bullosa (DEB) is characterized by blisters that heal with scarring and milia formation, including nail dystrophy, with an incidence of 2.1 per million live births. DEB is derived from defects of the anchoring fibril which results in sublamina densa separation.

We report a one-month old female who presented with vesicles and erosions on bilateral feet at birth. New vesicles and bullae were noted on other areas of the body such as the scalp, ears, anterior trunk, gluteal area, and extremities which spontaneously ruptured leading to erosions and crusts. Nails were thick and yellowish black. Consult was done at a clinic and was given unrecalled antibiotic, antihistamine, and cream for one week. There was no noted improvement hence she was brought to another clinic, diagnosed as staphylococcal scalded skin syndrome, advised admission and subsequently referred to dermatology service. After clinical assessment, findings of cell poor subepidermal blister on histology, linear C3 on DIF, and positive collagen 7 on ELISA, patient was managed as a case of dystrophic epidermolysis bullosa.

Epidermolysis bullosa is an inherited genetic disease with mutation in COL7A1 gene manifesting as vesicles and bullae on trauma prone areas. The diagnosis is based on clinical, histopathology, immunofluorescence, antigen studies, and electron microscopy. Uniquely, immunofluorescence revealed strong linear deposition of C3 at the basement membrane zone which is more suggestive of bullous pemphigoid than epidermolysis bullosa. This case highlights the importance of early diagnosis and proper management of the disease to limit unnecessary intervention.

Acrodermatitis continua of Hallopeau (ACH) is a chronic, rare pustular form of psoriasis that affects the distal extremities, particularly the fingers and toes. Although pustules are characteristic, they may not always be clinically apparent, especially in the earlier stages. This condition is often resistant to treatment; therefore, early and accurate diagnosis is essential for proper management and preventing complications.

A 34-year-old male farmer presented with a one-year history of pruritic erythematous scaly plaques involving both palms, thumbs and thumbnails. Pertinent history showed that the lesions appeared after contact with rubber gloves and fertilizers. Irritant versus allergic contact dermatitis were considered, but a negative patch test result ruled out the allergic component. He was treated with topical corticosteroids and was advised to wear cotton gloves under rubber gloves while working which provided relief. However, the plaques recurred now with appearance of pustules on both hands. A skin punch biopsy was done revealing psoriasiform dermatitis with subcorneal pustules, consistent with ACH. The patient was started on methotrexate 7.5 mg/week and topical clobetasol, alternating with calcipotriol with improvement of the palmar plaques and pustules.

ACH is often misdiagnosed due to its pus-filled lesions which may mimic infection or secondarily infected contact dermatitis or dyshidrotic eczema. In this case, the initial presentation mimicked a contact dermatitis, and it was only after patch testing and skin biopsy, that a definitive diagnosis was made.