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| Mendeliome v1.3487 | SSPO | Zornitza Stark Marked gene: SSPO as ready | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v1.3487 | SSPO | Zornitza Stark Gene: sspo has been classified as Green List (High Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v1.3487 | SSPO | Zornitza Stark Classified gene: SSPO as Green List (high evidence) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v1.3487 | SSPO | Zornitza Stark Gene: sspo has been classified as Green List (High Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v1.3486 | SSPO |
Sarah Milton changed review comment from: The HGNC approved symbol for this gene is SSPOP which refers to SCO-spondin pseudogene. Recently, it has been demonstrated this gene produces a functional protein; subcommissural organ-spondin, which plays a role in neural development and function. Given the previous pseudogene status most annotation will include n. as opposed to c. numbers (including in gnomAD v4). PMID: 41077560 describes 4 individuals from 3 families with biallelic variants in SSPOP with a neurodevelopmental disorder. Phenotype is encompassed by epilepsy (onset <2 years old), developmental delay, autism and behavioural issues. Variant types include missense, frameshift and splice site. No homozygous nonsense/frameshift variants in gnomad v4. (some hom splice site). Supportive functional studies including zebrafish knockout with epileptiform activity. Mouse knockout demonstrated reduced reissner’s fibre formation/smaller brain ventricles/spinal curvature anomalies. It was noted by authors another publication PMID: 32028786 discussed 2 related individuals - a grandmother and grandchild with homozygous frameshift variants in SSPOP (exact variant not provided) who both were just documented to have cervical cleft, no mention of ID/epilepsy. Sources: Literature; to: The HGNC approved symbol for this gene is SSPOP which refers to SCO-spondin pseudogene. Recently, it has been demonstrated this gene produces a functional protein; subcommissural organ-spondin, which is a large secreted glycoprotein that plays a role in neural development and function. Given the previous pseudogene status most annotation will include n. as opposed to c. numbers (including in gnomAD v4). PMID: 41077560 describes 4 individuals from 3 families with biallelic variants in SSPOP with a neurodevelopmental disorder. Phenotype is encompassed by epilepsy (onset <2 years old), developmental delay, autism and behavioural issues. Variant types include missense, frameshift and splice site. No homozygous nonsense/frameshift variants in gnomad v4. (some hom splice site). Supportive functional studies including zebrafish knockout with epileptiform activity. Mouse knockout demonstrated reduced reissner’s fibre formation/smaller brain ventricles/spinal curvature anomalies. It was noted by authors another publication PMID: 32028786 discussed 2 related individuals - a grandmother and grandchild with homozygous frameshift variants in SSPOP (exact variant not provided) who both were just documented to have cervical cleft, no mention of ID/epilepsy. Sources: Literature |
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| Mendeliome v1.3486 | SSPO |
Sarah Milton gene: SSPO was added gene: SSPO was added to Mendeliome. Sources: Literature new gene name tags were added to gene: SSPO. Mode of inheritance for gene: SSPO was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: SSPO were set to PMID: 41077560 Phenotypes for gene: SSPO were set to Neurodevelopmental disorder, MONDO:0700092, SSPOP-related Review for gene: SSPO was set to GREEN Added comment: The HGNC approved symbol for this gene is SSPOP which refers to SCO-spondin pseudogene. Recently, it has been demonstrated this gene produces a functional protein; subcommissural organ-spondin, which plays a role in neural development and function. Given the previous pseudogene status most annotation will include n. as opposed to c. numbers (including in gnomAD v4). PMID: 41077560 describes 4 individuals from 3 families with biallelic variants in SSPOP with a neurodevelopmental disorder. Phenotype is encompassed by epilepsy (onset <2 years old), developmental delay, autism and behavioural issues. Variant types include missense, frameshift and splice site. No homozygous nonsense/frameshift variants in gnomad v4. (some hom splice site). Supportive functional studies including zebrafish knockout with epileptiform activity. Mouse knockout demonstrated reduced reissner’s fibre formation/smaller brain ventricles/spinal curvature anomalies. It was noted by authors another publication PMID: 32028786 discussed 2 related individuals - a grandmother and grandchild with homozygous frameshift variants in SSPOP (exact variant not provided) who both were just documented to have cervical cleft, no mention of ID/epilepsy. Sources: Literature |
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