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GM28070 LCL from B-Lymphocyte

Description:

CEREBRAL CREATINE DEFICIENCY SYNDROME 2; CCDS2
GUANIDINOACETATE METHYLTRANSFERASE; GAMT

Affected:

Yes

Sex:

Male

Age:

16 YR (At Sampling)

  • Overview
  • Characterizations
  • Phenotypic Data
  • External Links
  • Culture Protocols

Overview

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Repository NIGMS Human Genetic Cell Repository
Subcollection Heritable Diseases
PIGI Consented Sample
Biopsy Source Peripheral vein
Cell Type B-Lymphocyte
Tissue Type Blood
Transformant Epstein-Barr Virus
Sample Source LCL from B-Lymphocyte
Race White
Ethnicity Not Hispanic/Latino
Ethnicity German
Country of Origin USA
Family Member 1
Family History N
Relation to Proband proband
Confirmation Molecular characterization before cell line submission to CCR
Species Homo sapiens
Common Name Human
Remarks See Phenotypic Data Tab; same subject as GM28096 (fibroblast). Affected sibling is GM28071.

Characterizations

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Gene GAMT
Chromosomal Location 19p13.3
Allelic Variant 1 601240.0007; CEREBRAL CREATINE DEFICIENCY SYNDROME 2; CCDS2
Identified Mutation c.522G>A (P.W174X)
 
Gene GAMT
Chromosomal Location 19p13.3
Allelic Variant 1 601240.0001; CEREBRAL CREATINE DEFICIENCY SYNDROME 2; CCDS2
Identified Mutation c.327G>A (p.K109K, splice site mutation)

Phenotypic Data

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Demographic Data
Relation to Proband proband
Age at Sampling 16 YR
Sex Male
Age of Onset(If not a control) 6 MO
Age at Diagnosis(If not a control) 5 YR
Hispanic or Latino/Not Hispanic or Latino Not Hispanic/Latino
Racial Category White
Country USA
 
Data Elements
Clinical Element Type: General NIGMS Catalog Remarks
  (Baseline)
Mutation Information
Gene, variant, consequence, and exon number:  TARGETED SEQUENCING ANALYSIS OF GENOMIC DNA REVEALED A HETEROZYGOUS PATHOGENIC VARIANT (C.522G>A) IN EXON 5 OF THE GAMT GENE (NM_000156.6) RESULTING IN A NONSENSE MUTATION (P.W174X). TARGETED SEQUENCING ANALYSIS OF GENOMIC DNA ALSO REVEALED A HETEROZYGOUS VARIANT (C.327G>A) IN EXON 2 OF THE GAMT GENE (NM_000156.6) RESULTING IN A SPLICE SITE MUTATION (P.K109K)
Zygosity:  Heterozygous
Age of Symptom Onset and Age at Diagnosis
Age of Symptom Onset:  6 MONTHS
Age at Diagnosis:  5 YEARS, 9 MONTHS
In Utero History Information
Birth History Information
Jaundice
Additional Information:  LOW FETAL HEART RATE
Dysmorphic Features
Neurological Symptoms
Hypotonia
Seizures
Unstable gait
Additional Information:  INTRACTABLE SEIZURES
Optical and Audiological Symptoms
Musculoskeletal Symptoms
Developmental Milestones
Delayed speech and language development
Global developmental delay
Gastrointestinal Symptoms
Genitourinary Symptoms
Respiratory and Cardiovascular Symptoms
Cognitive and Behavioral Symptoms
Learning disability
Additional Information:  NON-VERBAL; AT 5 YRS OLD: SOME STEROTYPIES AND OBSESSIVE BEHAVIOR
Additional Information
Testing Performed
Metabolic, Hematologic, and Endocrinologic Testing:  AT 5 YRS OLD: PLASMA CREATINE (MICROMOLES/L) 6.9 L (20-110 NORMAL RANGE ABOVE 2YRS); PLASMA GUANIDINOACETATE (MICROMOLES/L) 17.9 H (0.3-2.8 NORMAL RANGE ABOVE 2YRS); URINARY GUANIDINOACETATE (MICROMOLES/L) 1968 H (20-656 NORMAL RANGE 0-6 YRS); GUANIDINOACETATE/CREATINE (MILLIMOLES/MOLE) 556 H (10-130 NORMAL RANGE 0-6 YRS)
Uncategorized Testing:  AT 5 YRS OLD: VALPROIC ACID DETECTED; ELEVATED URACIL
Treatments and Assistive Devices
Occupational therapy
Physical therapy
Speech therapy
Communication or learning devices
Medications
 CREATINE; ORNITHINE; PROTEIN RESTRICTION; LEVETIRACETAM (KEPPRA) 100MG/ML; DIASTAT ACUDIAL (5-7.5-10 MG); DEPAKOTE (125 MG); DIAZEPAM (5 MG/5 ML)
Family History

External Links

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Gene Cards GAMT
Gene Ontology GO:0006601 creatine biosynthesis
GO:0006936 muscle contraction
GO:0008168 methyltransferase activity
GO:0016740 transferase activity
GO:0030731 guanidinoacetate N-methyltransferase activity
NCBI Gene Gene ID:2593
NCBI GTR 601240 GUANIDINOACETATE METHYLTRANSFERASE; GAMT
612736 CEREBRAL CREATINE DEFICIENCY SYNDROME 2; CCDS2
OMIM 601240 GUANIDINOACETATE METHYLTRANSFERASE; GAMT
612736 CEREBRAL CREATINE DEFICIENCY SYNDROME 2; CCDS2

Culture Protocols

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Split Ratio 1:4
Temperature 37 C
Percent CO2 5%
Percent O2 AMBIENT
Medium Roswell Park Memorial Institute Medium 1640 with 2mM L-glutamine or equivalent
Serum 15% fetal bovine serum Not Inactivated
Substrate None specified
Subcultivation Method dilution - add fresh medium
Supplement -
Pricing
International/Commercial/For-profit:
$373.00USD
U.S. Academic/Non-profit/Government:
$216.00USD
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How to Order
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