24 Matching Annotations
  1. Oct 2026
  2. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    First report on UK database of haemophilia B mutations and pedigrees. UK Haemophilia Centres
    1
    1. ClingenBaseline 25 Oct 2026
      mutations

      Case#: Saad_Probands 83-85 (assumed male; from UK)

      DiseaseAssertion: Saad_Proband 83: Severe Hemophilia B ; Saad_Probands 84-85: Moderate Hemophilia B

      FamilyInfo: None

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (Proband 83: FIX:C: <1, Proband 84: FIX:C 1.6, Proband 85: FIX:C: 4)

      CaseNotHPOs: None

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 ParentalTest:Unknown DiseaseSeverity:Moderate DiseaseSeverity:Severe FIXTesting:Partial inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/8091381/
  3. idosi.org idosi.org
    1.xps
    1
    1. ClingenBaseline 25 Oct 2026
      H (karachi

      Case#: Nawaz_Proband_H (karachi) (Pakistan resident)14 y/o)

      DiseaseAssertion: Hemophilia B (no severity assertion made)

      FamilyInfo: None

      ParentalTesting: None

      CasePresentingHPOs: N/A

      CaseNotHPOs: N/A

      CasePreviousTesting: None

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 ParentalTest:Unknown DiseaseSeverity:Unknown inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    idosi.org/wjms/3(2)08/1.pdf
  4. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Molecular pathology of haemophilia B
    1
    1. ClingenBaseline 24 Oct 2026
      mutation

      Case#: Green_Malmo_6 (assumed male)

      DiseaseAssertion: Severe Hemophillia B

      FamilyInfo: N/A

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (FIX:C <1%, FIX:Ag: 26-34)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.6364C>T (p.Arg-4Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:Full ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/2743975/
  5. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Germline mutations in the factor IX gene: a comparison of the pattern in Caucasians and non-Caucasians
    1
    1. ClingenBaseline 24 Oct 2026
      mutations in the factor IX gene resulting in hemophilia B

      Case#: Gostout_Proband_189 (assumed male, Asian (from India))

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: N/A

      ParentalTesting: None

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (FIX:C: 3%)

      CaseNotHPOs: None

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.6364C>T (p.Arg-4Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:Partial ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/8499919/
  6. onlinelibrary-wiley-com.libproxy.lib.unc.edu onlinelibrary-wiley-com.libproxy.lib.unc.edu
    Molecular characterization of haemophilia B patients in southern Brazil
    1
    1. ClingenBaseline 24 Oct 2026
      c.127C>T

      Case#: Meireles_Proband_4 (assumed male)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: None

      ParentalTesting: None

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity

      CaseNotHPOs: N/A

      CasePreviousTesting: None

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:None ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    onlinelibrary-wiley-com.libproxy.lib.unc.edu/doi/10.1111/hae.13277
  7. onlinelibrary-wiley-com.libproxy.lib.unc.edu onlinelibrary-wiley-com.libproxy.lib.unc.edu
    Lithuanian haemophilia A and B registry comprising phenotypic and genotypic data
    1
    1. ClingenBaseline 24 Oct 2026
      6364 C→T

      Case#: Ivaskevicius_Proband_LT65 (assumed male, Lithuanian)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: N/A

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (FIX:C: 0)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.6364C>T (p.Arg-4Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:Partial ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    onlinelibrary-wiley-com.libproxy.lib.unc.edu/doi/full/10.1046/j.1365-2141.2001.02671.x
  8. onlinelibrary-wiley-com.libproxy.lib.unc.edu onlinelibrary-wiley-com.libproxy.lib.unc.edu
    Consequences of factor IX mutations in 26 families with haemophilia B
    1
    1. ClingenBaseline 24 Oct 2026
      Mutations

      Case#: Weinmann_Family 9248

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: 16 of the families were from the Pacific Northwest, 4 from Colorado, and 6 were referred from elsewhere in the United States

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (FIX:C: <1%, FIX:Ag: 37)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.6364C>T

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:Full ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    onlinelibrary-wiley-com.libproxy.lib.unc.edu/doi/full/10.1046/j.1365-2141.1998.00512.x
  9. onlinelibrary-wiley-com.libproxy.lib.unc.edu onlinelibrary-wiley-com.libproxy.lib.unc.edu
    The human factor IX gene as germline mutagen test: Samples from mainland China have the putatively endogenous pattern of mutation
    1
    1. ClingenBaseline 24 Oct 2026

      Case#: Liu_Proband_438 (assumed male; Chinese)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: N/A

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity

      CaseNotHPOs: N/A

      CaseNotHPOFreeText: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: Absent

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense CAID:CA414435537 FIXTesting:None ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    onlinelibrary-wiley-com.libproxy.lib.unc.edu/doi/pdf/10.1002/1098-1004(200007)16:1<31::AID-HUMU6>3.0.CO
  10. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Factor IX gene analysis in 70 unrelated patients with haemophilia B: description of 13 new mutations
    1
    1. ClingenBaseline 23 Oct 2026
      mutation

      Case#: Attali_LY04 (assumed male, from France)

      DiseaseAssertion: Moderate Hemophilia B

      FamilyInfo: None

      ParentalTesting: None

      CasePresentingHPOs: HP:0011858

      CasePresentingHPOsFreeText: reduced factor IX activity (FIX:C: 3 ; FIX:Ag: 41)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense CAID:CA414435537 ParentalTest:Unknown Zygosity:NoZygosityAssertion FIXTesting:Full DiseaseSeverity:Moderate inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/10595634/
  11. link.springer.com link.springer.com
    Germline origins in the human F9 gene: frequent G:C→A:T mosaicism and increased mutations with advanced maternal age
    2
    1. ClingenBaseline 22 Oct 2026
      mutation

      Case#: HB189 (assumed male, Hawaiian)

      DiseaseAssertion: No disease assertion made

      FamilyInfo: Of the 30 families, germline or so- matic origins were found in 9 mothers, 5 maternal grandmothers, and 16 maternal grandfathers. For the 29 incomplete families, origins were found in 14 mothers, 5 maternal grandmothers, and 10 maternal grandfathers. Comparing the two family types shows no significant difference (P=0.29), suggesting that no major bias occurs in the analyses because of the inclusion of incomplete families

      ParentalTesting: N/A

      CasePresentingHPOs: N/A

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked Mutation:Missense DiseaseEntity:FactorIXDeficiency Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:None inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
    2. ClingenBaseline 22 Oct 2026
      mutation

      Case#: HB348 (assumed male, Caucasian, 28 y/o)

      DiseaseAssertion: No disease assertion made

      FamilyInfo: Of the 30 families, germline or so- matic origins were found in 9 mothers, 5 maternal grandmothers, and 16 maternal grandfathers. For the 29 incomplete families, origins were found in 14 mothers, 5 maternal grandmothers, and 10 maternal grandfathers. Comparing the two family types shows no significant difference (P=0.29), suggesting that no major bias occurs in the analyses because of the inclusion of incomplete families

      ParentalTesting: N/A

      CasePresentingHPOs: N/A

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:None inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    link.springer.com/article/10.1007/s004399900158
  12. haematologica.org haematologica.org
    Molecular genotyping of the Italian cohort of patients with hemophilia B
    2
    1. ClingenBaseline 22 Oct 2026
      ion of a causative mutation

      Case#: HBF12 (North Indian origin)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: For each patient at least two first or second degree relatives were also analyzed. In every case the mother of the patient was analyzed to establish the presence of the mutation in the heterozygous state.

      ParentalTesting: Mother

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant:NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense CAID:CA414435537 ParentalTest:Mother DiseaseSeverity:Severe FIXTesting:None inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
    2. ClingenBaseline 21 Oct 2026
      identify the causative mutation

      Case#: Belvini_Proband_14 (male, Italian)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: N/A

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant:

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense CAID:CA414435537 ParentalTest:Unknown DiseaseSeverity:Severe FIXTesting:None inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    haematologica.org/article/view/3523
  13. www.ncbi.nlm.nih.gov www.ncbi.nlm.nih.gov
    Assessment of the F9 genotype-specific FIX inhibitor risks and characterization of 10 novel severe F9 defects in the first molecular series of Argentine patients with haemophilia B
    1
    1. ClingenBaseline 22 Oct 2026
      2.

      Case#: 2

      DiseaseAssertion: Hemophilia B, severe

      FamilyInfo: NA

      ParentalTesting: NA

      CasePresentingHPOs: HP:0011858

      CaseHPOFreeText: FIX:C < 1%

      CaseNotHPOs: NA

      CaseNotHPOFreeText: NA

      CasePreviousTesting: All relevant sequences of F9 were PCR amplified and analyzed by DNA sequencing

      Gene: F9

      Variant: NM_000133.3:c.127C>T

      LegacyVariant:

      ClinVar: No

      CAID: CA414435537

      gnomAD:

      CaseInfo DiseaseEntity:FactorIXDeficiency DiseaseSeverity:SevereHemophiliaB AssayDiscrepancy:NotReported Zygosity:NoZygosityAssertion FIXtesting:Partial Mutation:Missense Inhibitor:Absent CAID:CA414435537 inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    ncbi.nlm.nih.gov/pmc/articles/PMC4220540/
  14. link-springer-com.libproxy.lib.unc.edu link-springer-com.libproxy.lib.unc.edu
    Recurrent mutations in the factor IX gene: founder effect or repeat de novo events
    1
    1. ClingenBaseline 22 Oct 2026
      mutation

      Case#: Knobloch_Malmo_20 (assumed male, German)

      DiseaseAssertion: Moderate Hemophilia B

      FamilyInfo: N/A

      ParentalTesting: None

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.6364C>T (p.Arg-4Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:None ParentalTest:Unknown DiseaseSeverity:Moderate inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    link-springer-com.libproxy.lib.unc.edu/article/10.1007/BF00216143
  15. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Fast and efficient mutation detection method using multiplex PCR and cycle sequencing--application to haemophilia B
    1
    1. ClingenBaseline 22 Oct 2026
      mutation

      Case#: Cases 1157, 1125, 1382, and 1434

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: In 16 cases, the family pedigree showed more than one affected individual (familial cases) and 12 cases were sporadic. In 17 cases, familial data was not available.

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (Case 1157 FIX:C: <1; FIX:Ag: 38) (Case 1125 FIX:C: <1; FIX:Ag: n/a (Case 1382 FIX:C: <1; FIX:Ag: 1) Case 1434 FIX:C <1; FIX:Ag: n/a)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.6364C>T (p.Arg-4Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 ParentalTest:Unknown FIXTesting:Full DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/10739381/
  16. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Haplotype analysis of identical factor IX mutants using PCR
    1
    1. ClingenBaseline 22 Oct 2026
      mutations

      Case#: UK 130, Malmo 19, UK 134, Malmo 6, UK 129, Malmo 40, Malmo 20 (assumed male, from UK and Malmö, Sweden)

      DiseaseAssertion: UK 130: Moderate Hemophilia B Malmo 19: Moderate Hemophilia B UK 134: Severe Hemophilia B Malmo 6: Severe Hemophilia B UK 129: Moderate Hemophilia B Malmo 40: Moderate Hemophilia B Malmo 20: Moderate Hemophilia B

      FamilyInfo: None

      ParentalTesting: N/A

      CasePresentingHPOs: reduced factor IX activity

      CaseHPOsFreeText: UK 130 FIX:C: 1.6 Malmo 19 FIX:C: 2.3 ; FIX:AG: 36 UK 134 FIX:C: <1 Malmo 6 FIX:C: <1 ; FIX:AG: 26-35 UK 129 FIX:C: 4 Malmo 40 FIX:C: 1 ; FIX:AG: 30 Malmo 20 FIX:C: 2 ; FIX:AG: 27

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense CAID:CA414435537 ParentalTest:Unknown FIXTesting:Full Zygosity:NoZygosityAssertion DiseaseSeverity:Moderate DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    pubmed.ncbi.nlm.nih.gov/1615486/
  17. onlinelibrary-wiley-com.libproxy.lib.unc.edu onlinelibrary-wiley-com.libproxy.lib.unc.edu
    Insight into molecular changes of the FIX protein in a series of Italian patients with haemophilia B
    1
    1. ClingenBaseline 21 Oct 2026

      Case#: IG38 (Italian, assumed male)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: Not provided

      ParentalTesting: Not provided

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (FIX:C: <1%, FIX:Ag: 20)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.16364C>T (p.Arg-4Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:Full ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    onlinelibrary-wiley-com.libproxy.lib.unc.edu/doi/10.1111/j.1365-2516.2006.01275.x
  18. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Missense mutations and evolutionary conservation of amino acids: evidence that many of the amino acids in factor IX function as "spacer" elements
    1
    1. ClingenBaseline 21 Oct 2026
      missense mutation

      Case#: Family HB90

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: None

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (FIX:C:4 (post therapy values but clinically severe by criteria of Eyster et al. (1980)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      AdditionalCaseInfo: Previously reported by Giannelli et al. (1990)

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:Partial ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/1680287/
  19. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Molecular pathology of haemophilia B: identification of five novel mutations including a LINE 1 insertion in Indian patients
    1
    1. ClingenBaseline 21 Oct 2026
      mutations

      Case#: B21 (assumed male, Indian origin)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: None

      ParentalTesting: N/A

      CasePresentingHPOs: reduced factor IX activity (FIX:C: 1.3%)

      CaseHPOsFreeText: HP:0011858

      CaseNotHPOs: N/A

      CasePreviousTesting: None

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense CAID:CA414435537 ParentalTest:Unknown Zygosity:NoZygosityAssertion FIXTesting:Partial DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/15086324/
  20. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Spectrum of F9 mutations in Chinese haemophilia B patients: identification of 20 novel mutations
    1
    1. ClingenBaseline 21 Oct 2026
      mutation

      Case#: Mutation found in 4 patients, and in 4 families

      DiseaseAssertion: Severe in 2 cases, moderate in the other 2 cases

      FamilyInfo: N/A

      ParentalTesting: None

      CasePresentingHPOs: HP:0011858, HP:0003645, HP:0001892

      CaseHPOsFreeText: reduced factor IX activity, activated partial thromboplastin time (APTT), normal FVIII clotting activity and bleeding tendency

      CaseNotHPOs: None

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 ParentalTest:Unknown FIXTesting:None DiseaseSeverity:Moderate DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/22544209/
  21. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Germline mutations in Peruvian patients with hemophilia B: pattern of mutation in AmerIndians is similar to the putative endogenous germline pattern
    1
    1. ClingenBaseline 21 Oct 2026
      mutation

      Case#: Heit_Proband_HB535 (assumed male, AmerIndian from Peru)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: N/A

      ParentalTesting: N/A

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (FIX:C: <1%)

      CaseNotHPOs: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      LegacyVariant: c.6364C>T (Arg-4Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion CAID:CA414435537 FIXTesting:Partial ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/9600455/
  22. pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
    Twenty-Four Novel Hemophilia B Mutations Revealed by Rapid Scanning of the Whole Factor IX Gene in a French Population Sample
    1
    1. ClingenBaseline 21 Oct 2026
      mutations

      Case#: Ghanem_Paris 2 (assumed male, from Paris) & Ghanem_ Caen 2 (assumed male, from Caen)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: N/A

      ParentalTesting: None

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: reduced factor IX activity (Paris 2: FIX:C: <1, FIX:Ag: 28, Caen 2: FIX:C: <1

      CaseNotHPOs: None

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Highest AF (South Asian population): 0.0004904

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense Zygosity:NoZygosityAssertion FIXTesting:Full ParentalTest:Unknown DiseaseSeverity:Severe CAID:CA414435537 inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    pubmed.ncbi.nlm.nih.gov/8055323/
  23. onlinelibrary-wiley-com.libproxy.lib.unc.edu onlinelibrary-wiley-com.libproxy.lib.unc.edu
    Identification of twenty‐one new mutations in the factor IX gene by SSCP analysis
    1
    1. ClingenBaseline 21 Oct 2026

      Case#: Patient 72 (Spanish origin; assumed male)

      DiseaseAssertion: Severe Hemophilia B

      FamilyInfo: Not available

      ParentalTesting: Not available

      CasePresentingHPOs: HP:0011858

      CaseHPOsFreeText: FIX:C = <1 (reduced factor IX activity)

      CaseNotHPOs: N/A

      CaseNotHPOFreeText: N/A

      CasePreviousTesting: N/A

      Gene: F9

      Variant: NM_000133.4:c.127C>T (p.Arg43Trp)

      ClinVar: 811505

      CAID: CA414435537

      gnomAD: Absent/Not Reported

      Gene:F9 CaseInfo InheritancePattern:X-Linked DiseaseEntity:FactorIXDeficiency Mutation:Missense CAID:CA414435537 FIXTesting:Partial ParentalTest:Unknown DiseaseSeverity:Severe inferred_gene_hgnc:3551 inferred_gene_source:CAID ClinGen Coag Fac Def VCEP
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    URL

    onlinelibrary-wiley-com.libproxy.lib.unc.edu/doi/pdf/10.1002/(SICI)1098-1004(1999)13:2<160::AID-HUMU9>3.0.CO