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Congenital myopathy v7.76 TNPO3 Achchuthan Shanmugasundram Classified gene: TNPO3 as Amber List (moderate evidence)
Congenital myopathy v7.76 TNPO3 Achchuthan Shanmugasundram Added comment: Comment on list classification: There are two unrelated families with congenital/ early-onset LGMD/ myopathy. However, only one patient from the large Spanish kindred was reported with myopathy before 5 years of age. Hence, this gene can only be rated amber with the current evidence. The 'watchlist' tag has been added to review this gene in light of any new evidence.
Congenital myopathy v7.76 TNPO3 Achchuthan Shanmugasundram Gene: tnpo3 has been classified as Amber List (Moderate Evidence).
Congenital myopathy v7.75 TNPO3 Achchuthan Shanmugasundram Tag watchlist tag was added to gene: TNPO3.
Congenital myopathy v7.75 TNPO3 Achchuthan Shanmugasundram changed review comment from: PMIDs: 23543484 & 23667635 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy (LGMD) and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion in TNPO3 gene (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.

PMID:23667635 (2013) reported an additional sporadic case of an Italian female patient with young adult-onset LGMD phenotype and proximal weakness and had dystrophic biopsy with mitochondrial abnormalities (ragged-red fibres, COX-negative fibres).This patient was identified with a heterozygous variant in TNPO3 gene (c.2453G>A; p.Arg818Pro).

PMID:31071488 (2019) reported two individuals from a Hungarian family with an early-onset, slowly progressive muscular dystrophy. Both the female proband and her affected son had delayed early motor milestones and presented with progressive weakness of facial, bulbar, axial, and distal muscles especially of the lower extremities. Electromyography indicated myogenic damage and muscle biopsy from the proband showed myopathic alterations with sarcoplasmic masses and signs of mitochondrial dysfunction. Exome sequencing of the female proband identified a novel c.2767delC (p.Arg923AspfsTer17) variant in TNPO3, which was also identified in the affected son by Sanger sequencing; the unaffected son did not have the variant.

PMID:31192305 (2019) reported the identification of a novel heterozygous variant c.2757delC (p.Arg920Glyfs*20) in TNPO3 gene in a three-generation Swedish family with congenital or early-onset myopathy and slow progression, causing proximal and less pronounced distal muscle weakness.

This gene has been associated with Muscular dystrophy, limb-girdle, autosomal dominant 2 in OMIM (MIM #608423, last accessed 19 June 2026). It is also classified as a 'Definitive' disease association by Muscular Dystrophies and Myopathies GCEP in ClinGen (https://search.clinicalgenome.org/CCID:008206).; to: PMIDs: 23543484 & 23667635 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy (LGMD) and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion in TNPO3 gene (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.

PMID:23667635 (2013) reported an additional sporadic case of an Italian female patient with young adult-onset LGMD phenotype and proximal weakness and had dystrophic biopsy with mitochondrial abnormalities (ragged-red fibres, COX-negative fibres).This patient was identified with a heterozygous variant in TNPO3 gene (c.2453G>A; p.Arg818Pro).

PMID:31071488 (2019) reported two individuals from a Hungarian family with an early-onset, slowly progressive muscular dystrophy. Both the female proband and her affected son had delayed early motor milestones and presented with progressive weakness of facial, bulbar, axial, and distal muscles especially of the lower extremities. Electromyography indicated myogenic damage and muscle biopsy from the proband showed myopathic alterations with sarcoplasmic masses and signs of mitochondrial dysfunction. Exome sequencing of the female proband identified a novel c.2767delC (p.Arg923AspfsTer17) variant in TNPO3, which was also identified in the affected son by Sanger sequencing; the unaffected son did not have the variant. It appears that PMID:31217819 describes the same Hungarian family form the descriptions.

PMID:31192305 (2019) reported the identification of a novel heterozygous variant c.2757delC (p.Arg920Glyfs*20) in TNPO3 gene in a three-generation Swedish family with congenital or early-onset myopathy and slow progression, causing proximal and less pronounced distal muscle weakness.

This gene has been associated with Muscular dystrophy, limb-girdle, autosomal dominant 2 in OMIM (MIM #608423, last accessed 19 June 2026). It is also classified as a 'Definitive' disease association by Muscular Dystrophies and Myopathies GCEP in ClinGen (https://search.clinicalgenome.org/CCID:008206).
Congenital myopathy v7.75 TNPO3 Achchuthan Shanmugasundram Phenotypes for gene: TNPO3 were changed from to Muscular dystrophy, limb-girdle, autosomal dominant 2, OMIM:608423; autosomal dominant limb-girdle muscular dystrophy type 1F, MONDO:0012034
Congenital myopathy v7.74 TNPO3 Achchuthan Shanmugasundram Publications for gene: TNPO3 were set to
Congenital myopathy v7.73 TNPO3 Achchuthan Shanmugasundram changed review comment from: PMIDs: 23543484 & 23667635 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy (LGMD) and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion in TNPO3 gene (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.

PMID:23667635 (2013) reported an additional sporadic case of an Italian female patient with young adult-onset LGMD phenotype and proximal weakness and had dystrophic biopsy with mitochondrial abnormalities (ragged-red fibres, COX-negative fibres).This patient was identified with a heterozygous variant in TNPO3 gene (c.2453G>A; p.Arg818Pro).

PMID:31071488 (2019) reported two individuals from a Hungarian family with an early-onset, slowly progressive muscular dystrophy. Both the female proband and her affected son had delayed early motor milestones and presented with progressive weakness of facial, bulbar, axial, and distal muscles especially of the lower extremities. Electromyography indicated myogenic damage and muscle biopsy from the proband showed myopathic alterations with sarcoplasmic masses and signs of mitochondrial dysfunction. Exome sequencing of the female proband identified a novel c.2767delC (p.Arg923AspfsTer17) variant in TNPO3, which was also identified in the affected son by Sanger sequencing; the unaffected son did not have the variant.

PMID:31192305 (2019) reported the identification of a novel heterozygous variant c.2757delC (p.Arg920Glyfs*20) in TNPO3 gene in a three-generation Swedish family with congenital or early-onset myopathy and slow progression, causing proximal and less pronounced distal muscle weakness.


This gene has been associated with Muscular dystrophy, limb-girdle, autosomal dominant 2 in OMIM (MIM #608423, last accessed 19 June 2026). It is also classified as a 'Definitive' disease association by Muscular Dystrophies and Myopathies GCEP in ClinGen (https://search.clinicalgenome.org/CCID:008206).; to: PMIDs: 23543484 & 23667635 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy (LGMD) and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion in TNPO3 gene (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.

PMID:23667635 (2013) reported an additional sporadic case of an Italian female patient with young adult-onset LGMD phenotype and proximal weakness and had dystrophic biopsy with mitochondrial abnormalities (ragged-red fibres, COX-negative fibres).This patient was identified with a heterozygous variant in TNPO3 gene (c.2453G>A; p.Arg818Pro).

PMID:31071488 (2019) reported two individuals from a Hungarian family with an early-onset, slowly progressive muscular dystrophy. Both the female proband and her affected son had delayed early motor milestones and presented with progressive weakness of facial, bulbar, axial, and distal muscles especially of the lower extremities. Electromyography indicated myogenic damage and muscle biopsy from the proband showed myopathic alterations with sarcoplasmic masses and signs of mitochondrial dysfunction. Exome sequencing of the female proband identified a novel c.2767delC (p.Arg923AspfsTer17) variant in TNPO3, which was also identified in the affected son by Sanger sequencing; the unaffected son did not have the variant.

PMID:31192305 (2019) reported the identification of a novel heterozygous variant c.2757delC (p.Arg920Glyfs*20) in TNPO3 gene in a three-generation Swedish family with congenital or early-onset myopathy and slow progression, causing proximal and less pronounced distal muscle weakness.

This gene has been associated with Muscular dystrophy, limb-girdle, autosomal dominant 2 in OMIM (MIM #608423, last accessed 19 June 2026). It is also classified as a 'Definitive' disease association by Muscular Dystrophies and Myopathies GCEP in ClinGen (https://search.clinicalgenome.org/CCID:008206).
Congenital myopathy v7.73 TNPO3 Achchuthan Shanmugasundram changed review comment from: PMIDs: 23543484 & 23667635 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy (LGMD) and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion in TNPO3 gene (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.

PMID:23667635 (2013) reported an additional sporadic case of an Italian female patient with young adult-onset LGMD phenotype and proximal weakness and had dystrophic biopsy with mitochondrial abnormalities (ragged-red fibres, COX-negative fibres).This patient was identified with a heterozygous variant in TNPO3 gene (c.2453G>A; p.Arg818Pro).

PMID:31192305 (2019) ; to: PMIDs: 23543484 & 23667635 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy (LGMD) and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion in TNPO3 gene (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.

PMID:23667635 (2013) reported an additional sporadic case of an Italian female patient with young adult-onset LGMD phenotype and proximal weakness and had dystrophic biopsy with mitochondrial abnormalities (ragged-red fibres, COX-negative fibres).This patient was identified with a heterozygous variant in TNPO3 gene (c.2453G>A; p.Arg818Pro).

PMID:31071488 (2019) reported two individuals from a Hungarian family with an early-onset, slowly progressive muscular dystrophy. Both the female proband and her affected son had delayed early motor milestones and presented with progressive weakness of facial, bulbar, axial, and distal muscles especially of the lower extremities. Electromyography indicated myogenic damage and muscle biopsy from the proband showed myopathic alterations with sarcoplasmic masses and signs of mitochondrial dysfunction. Exome sequencing of the female proband identified a novel c.2767delC (p.Arg923AspfsTer17) variant in TNPO3, which was also identified in the affected son by Sanger sequencing; the unaffected son did not have the variant.

PMID:31192305 (2019) reported the identification of a novel heterozygous variant c.2757delC (p.Arg920Glyfs*20) in TNPO3 gene in a three-generation Swedish family with congenital or early-onset myopathy and slow progression, causing proximal and less pronounced distal muscle weakness.


This gene has been associated with Muscular dystrophy, limb-girdle, autosomal dominant 2 in OMIM (MIM #608423, last accessed 19 June 2026). It is also classified as a 'Definitive' disease association by Muscular Dystrophies and Myopathies GCEP in ClinGen (https://search.clinicalgenome.org/CCID:008206).
Congenital myopathy v7.70 TNPO3 Achchuthan Shanmugasundram changed review comment from: PMIDs: 23667635 & 23543484 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.; to: PMIDs: 23543484 & 23667635 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy (LGMD) and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion in TNPO3 gene (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.

PMID:23667635 (2013) reported an additional sporadic case of an Italian female patient with young adult-onset LGMD phenotype and proximal weakness and had dystrophic biopsy with mitochondrial abnormalities (ragged-red fibres, COX-negative fibres).This patient was identified with a heterozygous variant in TNPO3 gene (c.2453G>A; p.Arg818Pro).

PMID:31192305 (2019)
Congenital myopathy v7.67 TNPO3 Achchuthan Shanmugasundram edited their review of gene: TNPO3: Changed publications to: 23543484, 23632945, 23667635, 31071488, 31192305, 31217819
Congenital myopathy v7.67 TNPO3 Achchuthan Shanmugasundram edited their review of gene: TNPO3: Added comment: PMIDs: 23667635 & 23543484 (2013) reported a large multigenerational Spanish Pedigree with a novel form of autosomal dominant limb-girdle muscular dystrophy and they presented with limb-girdle and distal muscle weakness with variable distribution, severity, and rate of progression. A heterozygous single nucleotide deletion (c.2771del) was identified in the family via whole-genome sequencing. Detailed clinical information was provided in PMID:23632945 for 29 patients of the family, where only one patient had onset before 5 years of age.; Changed publications to: 23667635, 23543484, 23632945, 31071488, 31192305, 31217819
Congenital myopathy v7.67 TNPO3 Achchuthan Shanmugasundram reviewed gene: TNPO3: Rating: AMBER; Mode of pathogenicity: None; Publications: 23667635, 23543484, 31071488, 31192305, 31217819; Phenotypes: Muscular dystrophy, limb-girdle, autosomal dominant 2, OMIM:608423, autosomal dominant limb-girdle muscular dystrophy type 1F, MONDO:0012034; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Congenital myopathy v7.25 TNPO3 Anna Sarkozy reviewed gene: TNPO3: Rating: AMBER; Mode of pathogenicity: ; Publications: ; Phenotypes: ; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Congenital myopathy v7.22 TNPO3 Arina Puzriakova Classified gene: TNPO3 as No list
Congenital myopathy v7.22 TNPO3 Arina Puzriakova Gene: tnpo3 has been removed from the panel.
Congenital myopathy v7.21 TNPO3 Arina Puzriakova gene: TNPO3 was added
gene: TNPO3 was added to Congenital myopathy. Sources: NHS GMS
Mode of inheritance for gene: TNPO3 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted