Case#: Patient 57, female, Han origin, 2 years old (age at diagnosis)

DiseaseAssertion: MPS1-H/S

FamilyInfo: N/A

CasePresentingHPOs: Joint stiffness (HP:0001387)

CaseHPOFreeText: N/A

CaseNotHPOs: Global Developmental Delay, Macrocephaly, Mongolian macula, Hepatosplenomegaly, Hernia, Airway obstruction (HP:0001263, HP:0000256, HP:0011369, HP:0001433, HP:0100790, HP:0006536)

CaseNotHPOFreeText: Cardiac disease

CaseEnzymeAssay: IDUA activity 1.5 nmol/h/mg protein. The normal range in Chinese controls was found to be 27.2–52 nmol/h/mg protein.

CaseUrineGAGs: Diagnosis was confirmed biochemically by the demonstration of an increased excretion of urinary dermatan sulfate and heparan sulfate.

CaseERT: N/A

CaseBMT: N/A

Variant1: c.1262T>C (p.L421P)

Variant1ClinVarID: 1328979

Variant1CAID: CA355963724

Variant2: c.1898C>T (p.S633L)

Variant2ClinVarID: 556406

Variant2CAID: CA355966010

AdditionalVariants: N/A

ParentalGenotype: The transmission of sequence variations found in each patient was inferred by sequencing the corresponding exons of the patient's parents - confirmed in trans by parental testing.

PreviouslyPublished N/A