A case report of mevalonate kinase deficiency in a 14-month-old female with fevers and lower extremity weakness.

Journal Article (Journal Article)

BACKGROUND: This case follows a 14-month-old female, who despite multiple presentations to several physicians, continued to have recurrent febrile episodes with gross motor delay. Her case revealed an often missed diagnosis of Mevalonate Kinase Deficiency, that now has an FDA approved treatment that both reduces recurrence and produces remission. CASE PRESENTATION: A 14-month-old female with a history of gross motor delay, frequent Upper Respiratory Tract infections, and otitis media presented to an urgent care for inconsolability and refusal to bear weight on her right leg. She had recently been treated with amoxicillin for acute otitis media and had developed a diffuse maculopapular rash, without any associated respiratory or gastrointestinal distress that persisted beyond cessation of the antibiotics. The patient presented multiple times to an urgent care over the subsequent week for fussiness, fever, anorexia, lymphadenopathy, with labs concerning for worsening anemia and elevated inflammatory markers. Subsequently, the patient was admitted to the hospital for suspected osteomyelitis versus oncologic process. X-Ray imaging of the patient's lower extremities showed osseous abnormalities inconsistent with infection. A metabolic work-up showed elevated urine mevalonic acid, and follow-up genetic testing was positive for mutations in both copies of her mevalonate kinase gene. This led to the diagnosis of MKD. CONCLUSIONS: Often, episodic presentations require multiple perspectives to reveal the underlying cause. This case illustrates how apparent simple febrile episodes has the potential for more complexity upon further evaluation.

Full Text

Duke Authors

Cited Authors

  • Coppola, T; Becken, B; Van Mater, H; McDonald, MT; Panayotti, GM

Published Date

  • July 20, 2019

Published In

Volume / Issue

  • 19 / 1

Start / End Page

  • 245 -

PubMed ID

  • 31325964

Pubmed Central ID

  • PMC6642485

Electronic International Standard Serial Number (EISSN)

  • 1471-2431

Digital Object Identifier (DOI)

  • 10.1186/s12887-019-1617-1


  • eng

Conference Location

  • England