Mutation Details

DNA change	Protein change	Exon/intron	Type	Reported classification	Bateman	SIFT	PolyPhen	Conserved	Protein domain	Remarks	LOVD ID
c.1354G>A	p.Gly452Arg	Exon 11	Missense	Disease-causing	Key residue	Not tolerated	Probably damaging	Highly	Ig 5	Segregation of the mutation with the disease.The mutation strongly reduces homophilic and heterophilic binding (De Angelis)

Patients

Family	# Affected relatives	Clinical features	Remarks	Reference
1	3	Adducted thumbs, Aphasia, Hydrocephalus, Mental retardation, Spastic paraplegia	Died < 1yr 2/3.	Jouet et al. (1994)

Year	Author	Title	Journal	Volume	Pages	Weblink
1999	De Angelis et al.	Pathological missense mutations of neural cell adhesion molecule L1 affect homophilic and heterophilic binding activities.	EMBO J.	18 No. 17	4744-4453	10469653
2002	De Angelis et al.	Disease-associated mutations in L1 CAM interfere with ligand interactions and cell-surface expression	Hum. Mol. Genet.	11	1-12	11772994
1994	Jouet et al.	X-linked spastic paraplegia (SPG1), MASA syndrome and X-linked hydrocephalus result from mutations in the L1 gene	Nat. Genet.	7	402-407	7920659
2000	Kenwrick et al.	Neural cell recognition molecule L1: relating biological complexity to human disease mutations	Hum. Mol. Genet.	9	879-886	10767310