Publications by authors named "M COSSIO"

RASopathies encompass a diverse set of disorders affecting genes that encode proteins within the RAS-MAPK pathway. RASA1 mutations are the cause of an autosomal dominant disorder called capillary malformation-arteriovenous malformation type 1 (CM-AVM1). Unlike other RASopathies, facial dysmorphism has not been described in these patients.

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Article Synopsis
  • Vitamin D deficiency is common in children with atopic dermatitis (AD) and may relate to the disease's severity, but past studies on Vitamin D supplementation have produced mixed results.
  • A randomized controlled trial with 101 children showed that while Vitamin D3 supplementation improved vitamin D levels, it did not significantly reduce the severity of AD or affect type 2 immunity markers compared to a placebo.
  • The study concludes that despite improving vitamin D status, weekly supplementation does not impact AD severity or related biomarkers in these patients.
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PIK3CA-related overgrowth spectrum (PROS) encompasses different clinical entities caused by somatic activating mutations in PIK3CA. Among PROS, CLOVES syndrome represents a severe phenotype with poor survival rate. We present the case of a 4-month-old girl with CLOVES syndrome successfully treated with alpelisib, a PIKC3A inhibitor.

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A twenty-two-year-old woman with a history of pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection (PANDAS) on rituximab presented with fever, abdominal pain, and worsening shortness of breath requiring supplemental oxygen via nasal cannula one month after a severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) infection from which she was minimally symptomatic and had recovered. Radiographic studies revealed bilateral patchy consolidations interspersed with ground-glass opacities (GGO). She was started on antibiotics for presumed community-acquired pneumonia with no improvement.

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