Table 2.
Summary of data for mOLF-resident myocilin (Refseq NM_000261.2) variants predicted to be benign, pathogenic, or likely pathogenic.
A. Benign | ||||||||
---|---|---|---|---|---|---|---|---|
Variant | Clinical Data | Cell Assaysa | Thermal Stability | Structure Analysis | Additional Variants | Other | ||
p.Thr293Lys c.878C>A |
Diagnosis ● POAG (Alward et al., 1998; Alward et al., 2002; Ennis et al., 2010; Faucher et al., 2002; Fingert et al., 1999; Millá et al., 2013; Williams-Lyn et al., 2000) ● Exfoliation Syndrome (Alward et al., 2002) ● NTG (Weisschuh, Neumann, Wolf, Wissinger, & Gramer, 2005) ● OHT (Faucher et al., 2002) ● PACG (X. Huang et al., 2014) ● Control Group (Faucher et al., 2002) Country/Ethnicity ● German ● Spanish ● Caucasian ● African American ● Chinese ● English ● Canadian Family History of POAG/JOAG? ● Yes (Millá et al., 2013) ● No (Ennis et al., 2010; Faucher et al., 2002; X. Huang et al., 2014; Williams-Lyn et al., 2000) gnomAD? ● Allele count 157, allele frequency 5.6e-4 ● European, Ashkenazi, Latino |
Secretion Assay ● 37 °C ○ +++ (Gobeil, Letartre, & Raymond, 2006) ● 30 °C ○ n/a Triton X-100 Solubility Assay ● n/a |
● WT-like ○ Tm=52.9 °C (Donegan et al., 2015) |
Location ● Surface exposed ● Internal loop of Blade C Interactions ● None Predicted consequence of substitution ● Tolerated |
● p.Thr293Met
(c.878C>T) ○ gnomAD: Allele count 3, allele frequency 1.21e-5 ○ Tolerated ● p.Thr293Ala (c.877A>G) ○ gnomAD: Allele count 1, allele frequency 4.02e-6 ○ Tolerated |
n/a | ||
p.Val329Met c.985G>A |
Diagnosis ● JOAG (Svidnicki et al., 2018) ● POAG (Fingert et al., 1999; Liu et al., 2012; Shimizu et al., 2000) ● Control Group (Fingert et al., 1999) Country/Ethnicity ● African American ● Brazilian Family History of POAG/JOAG? ● Yes (Shimizu et al., 2000) ● gnomAD? ● Allele count 72, allele frequency 2.55e-4 ○ African/African American |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ● Soluble(Shimizu et al., 2000) |
● Slightly destabilized, mouse WT-like
(Patterson-Orazem et al.,
2019) ○ Tm=49.6 °C (Donegan et al., 2015) |
Location ● Buried ● Innermost strand of Blade B Interactions ● Hydrophobic pocket with Blade A Predicted consequence of substitution ● Tolerated, rearrangement likely ● Met is residue in D. rerio myocilin |
n/a | n/a | ||
p.Glu352Lys c.1054G>A |
Diagnosis ● POAG (Alward et al., 1998; Faucher et al., 2002; Fingert et al., 1999; Liu et al., 2012; Whigham et al., 2011; Williams-Lyn et al., 2000) ● Control Group (Alward et al., 1998; Fingert et al., 1999; Liu et al., 2012; Svidnicki et al., 2018; Whigham et al., 2011) ● PCG (Millá et al., 2013) Country/Ethnicity ● Caucasian ● African American ● African Caribbean ● Canadian ● Black South African ● Spanish ● Brazilian Family History of POAG/JOAG? ● Yes (Williams-Lyn et al., 2000) ● No (Faucher et al., 2002; Williams-Lyn et al., 2000) gnomAD? ● Allele count 337, allele frequency 1.19e-3 ○ African/African American |
Secretion Assay ● 37 °C ○ +++ (Gobeil et al., 2006) ● 30 °C ○ n/a Triton X-100 Solubility Assay ● Soluble (Z. Zhou & Vollrath, 1999) ● Insoluble (Shimizu et al., 2000) |
● WT-like based on Glu352Gln (Burns, Turnage, Walker, & Lieberman, 2011) | Location ● Surface exposed ● Exterior loop of Blade B Interactions ● None Predicted consequence of substitution ● Tolerated |
n/a | n/a | ||
p.Thr353Ile c.1058C>T |
Diagnosis ● JOAG (Bhattacharjee et al., 2007; Lam et al., 2000; Park et al., 2016; Rose et al., 2011) ● POAG (Banerjee, Bhattacharjee, Ponda, Sen, & Ray, 2012; B. Fan et al., 2002; B. J. Fan et al., 2005; Fingert et al., 1999; Jia, Tam, et al., 2009; Lam et al., 2000; Pang et al., 2002; Yoon, Kim, Moon, Lim, & Joo, 1999; X. M. Zhou et al., 2013) ● NTG (B. J. Fan et al., 2005) ● PACG (Aung et al., 2005) ● Control Group(Aung et al., 2005; B. Fan et al., 2002; B. J. Fan et al., 2005; Lam et al., 2000; Liu et al., 2012; Pang et al., 2002) Country/Ethnicity ● Korean ● Japanese ● Chinese ● Indian Family History of POAG/JOAG? ● Yes (B. Fan et al., 2002; Park et al., 2016; Rose et al., 2011; Yoon et al., 1999; X. M. Zhou et al., 2013) ● No (Bhattacharjee et al., 2007) gnomAD? ● Allele count 191, allele frequency 6.75e-4 ○ Asian |
Secretion Assay ● 37 °C ○ +++ (Gobeil et al., 2006) ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
WT-like ○ Tm=53.1 °C (Donegan et al., 2015) |
Location ● Surface exposed, outer strand of Blade B Interactions ● Thr351 side chain, solvent Predicted consequence of substitution ● Tolerated |
n/a | ● Homozygous carrier had more severe
symptoms than heterozygous family members (Yoon et al., 1999) ● Individual heterozygous for Thr353Ile and Asp384Asn had more severe symptoms than father with only Thr353Ile (X. M. Zhou et al., 2013) ● One individual heterozygous for Thr353Ile and Asn480Lys (Rose et al., 2011) |
||
p.Lys398Arg c.1193G>A |
Diagnosis ● POAG (Alward et al., 1998; Alward et al., 2002; Fingert et al., 1999; Hulsman et al., 2002; Jansson, Marknell, Tomic, Larsson, & Wadelius, 2003; Liu et al., 2012; McDonald et al., 2010; O’Gorman et al., 2019; Rakhmanov et al., 2005; Vázquez, Herrero, Bastús, & Pérez, 2009; Vincent et al., 2002; Williams-Lyn et al., 2000) ● Control Group (Alward et al., 1998; Fingert et al., 1999; Hulsman et al., 2002; Liu et al., 2012; Vázquez et al., 2009) ● Exfoliative glaucoma (Jansson et al., 2003) ● Pigmentary glaucoma (Alward et al., 1998; Alward et al., 2002; Fingert et al., 1999) Country/Ethnicity ● Russian ● Mexican ● Dutch ● Swedish ● English/Scottish ● Canadian ● Spanish ● UK ○ African American ● Australian ● Caucasian Family History of POAG/JOAG? ○ n/a gnomAD? ● Allele count 992, allele frequency 3.51e-3 ● European |
Secretion Assay ● 37 °C ○ +++ (Gobeil et al., 2006; Jacobson et al., 2001) ● 30 °C ○ n/a Triton X-100 Solubility Assay ● Soluble (Shimizu et al., 2000; Z. Zhou & Vollrath, 1999) |
WT-like ○ Tm=53.8 °C (Burns et al., 2011) |
Location ● Surface exposed, loop connecting inner strands of Blade C Interactions ● None Predicted consequence of substitution ● Tolerated |
n/a | n/a | ||
p.Ala445Val c.1334C>T |
Diagnosis ● POAG (Alward et al., 1998; Faucher et al., 2002; Fingert et al., 1999; Lopez-Martinez et al., 2007) ● NTG (Weisschuh et al., 2005) ● Pigmentary glaucoma (Faucher et al., 2002) ● OHT (Vincent et al., 2002) Country/Ethnicity ● German ● Canadian ● French-Canadian ● Spanish ● Australian Family History of POAG/JOAG? ● Yes (Vincent et al., 2002) ● No (Faucher et al., 2002) gnomAD? ● Allele count 57, allele frequency 2.01e-4 |
Secretion Assay ● 37 °C ○ +++ (Gobeil et al., 2006) ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
● WT-like ○ Tm=54.2 °C (Burns et al., 2011) |
Location ● Surface exposed, on loop connecting inner strands of Blade D Interactions ● Thr443 Predicted consequence of substitution ● Tolerated |
n/a | n/a | ||
p.Lys500Arg c.1499A>G |
Diagnosis ● POAG (Alward et al., 1998; Fingert et al., 1999; Liu et al., 2012; Whigham et al., 2011; Williams, Carmichael, Wainstein, Hobbs, & Ramsay, 2015; Williams-Lyn et al., 2000) ● Control (Liu et al., 2012) Country/Ethnicity ○ African American ● Black South African Family History of POAG/JOAG? ● Yes (Williams et al., 2015) gnomAD? ● Allele count 161, allele frequency 5.69e-4 |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ● n/a |
n/a | Location ● C-terminal strand within molecular clasp of Blade E, surface exposed Interactions ● None Predicted consequence of substitution ● Tolerated |
p.Lys500Thr (c.1499A>C) ● gnomAD: Allele count 1, allele frequency 3.98e-6 ● Tolerated in structure |
One control individual was compound heterozygous for p.Lys500Arg and p.Asp446Tyr (Liu et al., 2012) | ||
B. Pathogenic | ||||||||
Variant | Clinical Data | Cell Assays | Thermal Stability | Structure Analysis | Additional Variants | Other | ||
p.Cys245Tyr c.734G>A |
Diagnosis ● JOAG (B. J. Fan et al., 2006) ● OHT (B. J. Fan et al., 2006) Country/Ethnicity ● Chinese Family History of POAG/JOAG? ● Yes (B. J. Fan et al., 2006) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Hogewind et al., 2007) ○ 0.28% of WT (Zadoo, Nguyen, Zode, & Hulleman, 2016) ● 30 °C ○ −/+ (Zadoo et al., 2016) Triton X-100 Solubility Assay ● Insoluble (Hogewind et al., 2007; Yam, Gaplovska-Kysela, Zuber, & Roth, 2007) ● Partially insoluble (Jia, Gong, et al., 2009) |
Likely destabilized ○ n/a (but see Cys433Arg) |
Location ● Blade E, molecular clasp, surface exposed Interactions ● Disulfide bonded to Cys433 Predicted consequence of substitution ● Deleterious |
n/a | n/a | ||
p.Gly246Arg c.736G>A |
Diagnosis ● JOAG (Adam et al., 1997; Brézin et al., 1997) Country/Ethnicity ● French Family History of POAG/JOAG? ● Yes (Adam et al., 1997; Brézin et al., 1997) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006; Vollrath & Liu, 2006) ○ 0.47% of WT (Zadoo et al., 2016) ● 30 °C ○ ++ (Gobeil et al., 2006; Vollrath & Liu, 2006; Zadoo et al., 2016) Triton X-100 Solubility Assay ○ n/a |
Destabilized ○ Tm=~42.6 °C (Burns et al., 2011; Donegan, Hill, Turnage, Orwig, & Lieberman, 2012) |
Location ● Blade E, molecular clasp, surface exposed Interactions ● None Predicted consequence of substitution ● Deleterious, charged side chain like Arg would interfere with proper positioning of Cys245 for disulfide bond formation |
n/a | n/a | ||
p.Gly252Arg c.754G>A |
Diagnosis ● POAG (Hewitt et al., 2007) ● JOAG (Booth et al., 2000; Rozsa et al., 1998; Shimizu et al., 2000; Vincent et al., 2002; Willoughby et al., 2004) ● OHT (Hewitt et al., 2007) Country/Ethnicity ● Australian ● Chinese ● Scottish ● US/Caucasian Family History of POAG/JOAG? ● Yes (Booth et al., 2000; Hewitt et al., 2007; Rozsa et al., 1998; Shimizu et al., 2000; Vincent et al., 2002) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ● – (Gobeil et al., 2006) ● 30 °C ○ +++ (Gobeil et al., 2006) Triton X-100 Solubility Assay ● Insoluble(Shimizu et al., 2000) |
Destabilized ○ Tm=44.8 °C (Burns et al., 2011) or 43.0 °C (Donegan et al., 2012), buffer dependent |
Location ● Blade E, molecular clasp, surface exposed Interactions ● Main chain NH H-bonded to carbonyl of Asp498 Predicted consequence of substitution ● Deleterious, Arg would clash with neighboring Glu253 and Trp250, causing destabilization of the molecular clasp |
● p.Gly252Glu
(c.755G>A) ○ gnomAD: allele count 2, allele frequency 8.25e-6 ○ Likely deleterious to structure ● p.Gly252Ala (c.755G>C) ○ gnomAD: allele count 3, allele frequency 1.15e-5 ○ Likely deleterious to structure |
● One individual compound heterozygous
for Gly252Arg and Gly244Val (Hewitt et
al., 2007) ● One individual also heterozygous for OPTN mutation (Willoughby et al., 2004) |
||
p.Arg272Gly c.814C>G |
Diagnosis ● JOAG (Shimizu et al., 2000) ● POAG (Shimizu et al., 2000) Country/Ethnicity ● US/Caucasian Family History of POAG/JOAG? ● Yes (Shimizu et al., 2000) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006) ● 30 °C ○ ++ (Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Shimizu et al., 2000) |
Destabilized ○ Tm=44.7 °C (Burns et al., 2011) or 41 °C (Donegan et al., 2012), buffer dependent |
Location ● Blade A, innermost β-strand, near bottom face, not solvent exposed Interactions ● Sidechain guanidinium group forms multiple stabilizing interactions with Glu483 on Blade E, and Thr285 on the adjacent β-strand of Blade A Predicted consequence of substitution ● Deleterious, removal of side chain interactions |
● p.Arg272Gln
(c.815G>A) ○ gnomAD: allele count 2, allele frequency 8.01e-6 ○ Likely deleterious to structure ● p.Arg272* (c.814C>T) ○ gnomAD: allele count 2, allele frequency 8.02e-6 ○ Uncertain |
n/a | ||
p.Glu323Lys c.967G>A |
Diagnosis ● JOAG (Rozsa et al., 1998; Shimizu et al., 2000) ● POAG (Shimizu et al., 2000) Country/Ethnicity ● Panamanian Family History of POAG/JOAG? ● Yes (Rozsa et al., 1998; Shimizu et al., 2000) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006)/+(Vollrath & Liu, 2006) ● 30 °C ○ +++ (Gobeil et al., 2006; Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Shimizu et al., 2000; Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm=44 °C (Donegan et al., 2012) or 45.6 °C (Burns et al., 2011), buffer dependent |
Location ● Loop connecting Blade A to Blade B, top face, but not surface exposed Interactions ● Main chain NH forms H-bonding interaction with carbonyl of Gln337 ● Side chain forms polar contact with NH Glu340 Predicted consequence of substitution ● Deleterious, charge inversion |
● p.Glu323_Val329dup
(c.967_987dup) ○ gnomAD: allele count 1, allele frequency 3.98e-6 ○ Likely deleterious to structure |
n/a | ||
p.Gly364Val c.1091G>T |
Diagnosis ● POAG (Alward et al., 1998; Fingert et al., 1999; Stone et al., 1997) Country/Ethnicity ● US ● US/Caucasian Family History of POAG/JOAG? ● Yes(Stone et al., 1997) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006)/++ (Jacobson et al., 2001; Vollrath & Liu, 2006) ● 30 °C ○ +++ (Gobeil et al., 2006; Jacobson et al., 2001; Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Partially insoluble (Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm=~45 °C (Burns et al., 2011; Donegan et al., 2012) |
Location ● Long loop connecting Blade B to Blade C, surface exposed Interactions ● Main chain NH forms H-bonding interaction with carbonyl of Ser393 Predicted consequence of substitution ● Deleterious, steric clash with Gln368 and Phe369 |
● p.Gly364Ser
(c.1090G>A) ○ gnomAD: allele count 2, allele frequency 7.95e-6 ● Likely deleterious to structure |
● Adenovirus-injected myocilinG364V into mouse eyes led to significant IOP elevation (Shepard et al., 2007) | ||
p.Gly367Arg c.1099G>A |
Diagnosis ● JOAG (Cobb et al., 2002; Gupta et al., 2020; Iliev et al., 2008; Kanagavalli, Krishnadas, Pandaranayaka, Krishnaswamy, & Sundaresan, 2003; Souzeau et al., 2015; Vincent et al., 2002; Yao et al., 2018) ● POAG (J. Chen et al., 2011; Faucher et al., 2002; Mansergh et al., 1998; Melki, Belmouden, Brezin, & Garchon, 2003; K. G. Michels-Rautenstrauss et al., 1998; Suzuki et al., 1997; Fumiko Taniguchi, Suzuki, Shirato, & Araie, 2000) Country/Ethnicity ● Japanese ● German ● Irish ● Indian ● Swiss ● Australian ● Scottish ● Chinese ● French ● Canadian ● Italian/French Family History of POAG/JOAG? ● Yes (J. Chen et al., 2011; Cobb et al., 2002; Faucher et al., 2002; Gupta et al., 2020; Iliev et al., 2008; Mansergh et al., 1998; K. G. Michels-Rautenstrauss et al., 1998; Souzeau et al., 2015; Fumiko Taniguchi et al., 2000; Vincent et al., 2002; Yao et al., 2018) ● No (Gupta et al., 2020; Kanagavalli et al., 2003) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006; Kanagavalli, Pandaranayaka, Krishnadas, Krishnaswamy, & Sundaresan, 2007) ● 30 °C ○ +++ (Gobeil et al., 2006) Triton X-100 Solubility Assay ○ n/a |
Destabilized ○ Tm= 42.7 °C (Donegan et al., 2012) or 45.7 °C (Burns et al., 2011), buffer dependent |
Location ● Long loop connecting Blade B to Blade C, surface exposed Interactions ● Main chain NH forms polar contact with side chain of Asp378 Predicted consequence of substitution ● Deleterious, large size of arginine would be sterically incompatible with neighboring Tyr376, which forms a solvent-exposed π-π stacking interaction with His366 |
See p.Gly367_Gln368delinsVal | n/a | ||
p.Gly367_Gln368delinsVal c.1101_1103delGACAinsT |
Diagnosis ● JOAG (Angius, De Gioia, et al., 1998; Angius, Pisano, et al., 1998) ● POAG (Angius, De Gioia, et al., 1998; Angius, Pisano, et al., 1998) Country/Ethnicity ● Italian Family History of POAG/JOAG? ● Yes (Angius, De Gioia, et al., 1998; Angius, Pisano, et al., 1998) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Vollrath & Liu, 2006) ● 30 °C ● + (Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Z. Zhou & Vollrath, 1999) |
n/a | Location ● Long loop connecting Blade B to Blade C, surface exposed Interactions ● Main chain NH forms polar contact with side chain of Asp378 Predicted consequence of substitution ● Deleterious, changes to this loop are generally problematic |
See p.Gly367Arg | n/a | ||
p.Pro370Leu c.1109C>T |
Diagnosis ● JOAG (Adam et al., 1997; Bayat et al., 2008; Campos-Mollo et al., 2007; X. Chen et al., 2009; Y. Chen, Jiang, Wan, Yu, & Sun, 2006; Damji et al., 1999; Hamanaka et al., 2017; C. Huang et al., 2018; X. Huang et al., 2014; Li et al., 2014; Mukhopadhyay et al., 2002; Rose et al., 2011; Rozsa et al., 1998; Shimizu et al., 2000; Stoilova et al., 1998; Suzuki et al., 1997; Svidnicki et al., 2018; F. Taniguchi, 1999; Vasconcellos et al., 2000; Vincent et al., 2002; Wei et al., 2011; Wiggs et al., 1998) ● POAG (Wei et al., 2005) Country/Ethnicity ● Colombian ● Chinese ● Iranian ● Japanese ● French-Canadian ● Canadian ● Indian ● Brazilian ● Greek ● French ● US ● US/Caucasian Family History of POAG/JOAG? ● Yes (Adam et al., 1997; Campos-Mollo et al., 2007; X. Chen et al., 2009; Y. Chen et al., 2006; Damji et al., 1999; Hamanaka et al., 2017; X. Huang et al., 2014; Li et al., 2014; Mukhopadhyay et al., 2002; Rozsa et al., 1998; Shimizu et al., 2000; Stoilova et al., 1998; Suzuki et al., 1997; F. Taniguchi, 1999; Vincent et al., 2002; Wei et al., 2005; Wei et al., 2011; Wiggs et al., 1998) ● No (Bayat et al., 2008) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006; Vollrath & Liu, 2006; Yam et al., 2007) ● 30 °C ○ - (Gobeil et al., 2006; Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Shimizu et al., 2000; Yam et al., 2007; Z. Zhou & Vollrath, 1999) |
Destabilized ● Could not be isolated in folded state for measurement (Burns et al., 2011) ● When combined with stabilizing variant D478S to yield OLFP370L/D478S, Tm = 47°C compared to OLFD478S alone, which is 58 °C (Hill et al., 2019) |
Location ● Long loop connecting Blade B to Blade C, surface exposed Interactions ● None Predicted consequence of substitution ● Deleterious, adjacent to Tyr371, likely Pro likely properly organizes this region to promote the interaction between the backbone carbonyl of Phe369 and Nε of Lys423, and orient Tyr371 for cation-π |
● p.Pro370Ser
(c.1108C>T) ○ gnomAD: allele count 1, allele frequency 3.19e-5 ○ Likely deleterious to structure |
● Often serves as a “positive
control” for pathogenic variants ● MyocilinP370L accumulates in the ER(Lopez-Martinez et al., 2007) ● MyocilinP370L downregulates homeostatic ER-stress response (L. Wang et al., 2007) ● MyocilinP370L impairs mitochondrial function (decreased transmembrane potential, increased ROS production, increased intracellular cytoplasm) (He, Leung, Zhuo, & Ge, 2009) ● Detailed histochemical analysis (Hamanaka et al., 2017) |
||
p.Thr377Met c.1130C>T |
Diagnosis ● JOAG (Puska, Lemmela, Kristo, Sankila, & Jarvela, 2005; Shimizu et al., 2000; Young et al., 2012; Zgaga et al., 2008) ● POAG (Allingham et al., 1998; Alward et al., 1998; Fingert et al., 1999; Hamanaka et al., 2017; Kanagavalli et al., 2003; Kitsos et al., 2010; Liu et al., 2012; Mackey et al., 2003; Melki, Idhajji, et al., 2003; Petersen et al., 2006; Puska et al., 2005; Shimizu et al., 2000; Wiggs et al., 1998; Wilkinson et al., 2003; Wirtz et al., 2008) ● NTG (Mackey et al., 2003; Puska et al., 2005; Wilkinson et al., 2003) ● OHT (Hamanaka et al., 2017; Kitsos et al., 2010; Mackey et al., 2003; Petersen et al., 2006; Puska et al., 2005; Wilkinson et al., 2003; Wirtz et al., 2008) Country/Ethnicity ● Croatian ● US ● US/Caucasian ● Indian ● Australian ○ African American ● Finnish ● Greek ● Dutch/Croatian ● English ● Greek/Macedonian ● Japanese ● Moroccan Family History of POAG/JOAG? ● Yes(Allingham et al., 1998; Alward et al., 1998; Hamanaka et al., 2017; Kanagavalli et al., 2003; Kitsos et al., 2010; Mackey et al., 2003; Petersen et al., 2006; Puska et al., 2005; Shimizu et al., 2000; Wiggs et al., 1998; Wilkinson et al., 2003; Wirtz et al., 2008; Young et al., 2012; Zgaga et al., 2008) gnomAD? ● Allele count 5, allele frequency 1.99e-5 |
Secretion Assay ● 37 °C ● + (Gobeil et al., 2006)/++ (Vollrath & Liu, 2006) ● 30 °C ○ +++ (Gobeil et al., 2006; Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Partially insoluble (Z. Zhou & Vollrath, 1999) ● Insoluble (Shimizu et al., 2000) |
Destabilized ● Tm = 44.3 °C (Donegan et al., 2012) or 47.7°C (Burns et al., 2011), buffer dependent |
Location ● Long loop connecting Blade B to Blade C Interactions ● Main chain carbonyl makes polar contact with Nε of Lys423 ● Side chain makes polar contacts with Gly374 carbonyl and main chain NH of Tyr371 Predicted consequence of substitution ● Deleterious, loss of numerous polar interactions would propagate to weaken cation-π and metal ion site |
● p.Thr377Lys (c.1130C>A) (Vincent et al.,
2002) ○ Likely deleterious to structure ● p.Thr377Arg (c.1130C>G) (Waryah, Narsani, Sheikh, Shaikh, & Shahani, 2013) ○ Likely deleterious to structure ● p.Thr377Ala (c.1129A>G) ○ gnomAD: allele count 2, allele frequency 7.96e-6 ○ Uncertain |
● Detailed histochemical analysis
(Hamanaka et al.,
2017) ● Four family members compound heterozygous for p.Thr377Met and p.Gln368* have higher IOP than family members with only p.Gln368* (Young et al., 2012) ● Two family members compound heterozygotes for p.Thr377Met and p.Val495Ile (Alward et al., 1998) |
||
p.Asp380Ala c.1139A>C |
Diagnosis ● JOAG (Campos-Mollo et al., 2007; Kennan et al., 1998; Stoilova et al., 1998) Country/Ethnicity ● Spanish ● English Family History of POAG/JOAG? ● Yes (Campos-Mollo et al., 2007; Kennan et al., 1998; Stoilova et al., 1998) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006)/+(Vollrath & Liu, 2006) ● 30 °C ○ ++ (Gobeil et al., 2006)/+++ (Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Partially insoluble (Z. Zhou & Vollrath, 1999) |
Destabilized ● Tm = ~46.6 °C (Burns et al., 2011; Donegan et al., 2012) |
Location ● Innermost strand, Blade C Interactions ● Ca2+, Na+, Tyr371 Predicted consequence of substitution ● Deleterious, loss of ionic interactions |
● p.Asp380Gly (c.1139A>G) (Alward et al.,
1998) ○ Likely deleterious to structure ● p.Asp380His (c.1138G>C) (Wirtz, Samples, Choi, & Gaudette, 2007) ○ Likely deleterious to structure ● p.Asp380Asn (c.1138G>A) (Challa et al., 2002) ○ Likely deleterious to structure |
● Aggregation of OLFD380A is facile at 37 °C, pH 7.2 (Hill, Donegan, & Lieberman, 2014) | ||
p.Lys423Glu c.1267A>G |
Diagnosis ● JOAG (Bruttini et al., 2003; Faucher et al., 2002; Morissette et al., 1998; Svidnicki et al., 2018) ● POAG (Bruttini et al., 2003; Morissette et al., 1998) ● OHT (Morissette et al., 1998) Country/Ethnicity ● Brazilian ● Italian ● French-Canadian ● Canadian Family History of POAG/JOAG? ● Yes (Bruttini et al., 2003; Faucher et al., 2002; Morissette et al., 1998) ● No (Faucher et al., 2002) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006; Jacobson et al., 2001; Vollrath & Liu, 2006) ● 30 °C ○ - (Gobeil et al., 2006; Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Z. Zhou & Vollrath, 1999) |
Destabilized ● 34.2 °C (Donegan et al., 2012) or 40.5 °C (Burns et al., 2011) |
Location ● On loop connecting Blade C to Blade D Interactions ● Internal cation-π with Tyr371 Predicted consequence of substitution ● Deleterious, charge inversion internal to protein |
n/a | ● In family, 4 homozygotes had no symptoms while heterozygotes did have JOAG/POAG (Morissette et al., 1998) | ||
p.Val426Phe c.1276G>T |
Diagnosis ● JOAG (Lim, Lichter, Higashi, Downs, & Richards, 2003; Mansergh et al., 1998; Millá et al., 2013; Rozsa et al., 1998; Shimizu et al., 2000) ● POAG (Shimizu et al., 2000) Country/Ethnicity ● Spanish ● US/Caucasian Family History of POAG/JOAG? ● Yes (Lim et al., 2003; Mansergh et al., 1998; Millá et al., 2013; Rozsa et al., 1998; Shimizu et al., 2000) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006; Vollrath & Liu, 2006) ● 30 °C ○ ++ (Vollrath & Liu, 2006)/+++ (Gobeil et al., 2006) Triton X-100 Solubility Assay ● Insoluble (Shimizu et al., 2000; Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm= 41.5 °C (Donegan et al., 2012) or 45.1 °C (Burns et al., 2011), buffer dependent |
Location ● On loop connecting Blade C to Blade D Interactions ● Hydrophobic between Blades C and D Predicted consequence of substitution ● Deleterious, would weaken or disrupt the neighboring cation-π interaction between Lys423 and Tyr371 (see Lys423) |
n/a | n/a | ||
p.Cys433Arg c.1297T>C |
Diagnosis ● JOAG (Povoa, Malta, Rezende Mde, de Melo, & Giannella-Neto, 2006; Svidnicki et al., 2018; Vasconcellos et al., 2000) ● POAG (Povoa et al., 2006) ● OHT (Povoa et al., 2006) Country/Ethnicity ● Brazilian Family History of POAG/JOAG? ● Yes (Povoa et al., 2006; Vasconcellos et al., 2000) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006) ● 30 °C ○ - (Gobeil et al., 2006) Triton X-100 Solubility Assay ○ n/a |
Destabilized ○ Tm=40.4 °C (Burns et al., 2011) or 42.6 °C (Donegan et al., 2012), buffer dependent |
Location ● Blade D, β-turn connecting two inner strands on bottom face Interactions ● Disulfide with Cys245, and NH fmors interaction with Glu385; Glu385Ala is misfolded (Donegan et al., 2012) Predicted consequence of substitution ● Deleterious, loss of covalent disulfide bond and interacting with Glu385 |
n/a | n/a | ||
p.Tyr437His c.1309T>C |
Diagnosis ● JOAG (Alward et al., 2002; Lei, Li, Liu, & Zhang, 2019; Wiggs et al., 1998; Yang et al., 2020) ● POAG (Alward et al., 1998; Alward et al., 2002; Fingert et al., 1999; Lei et al., 2019; Stone et al., 1997) ● OHT (Lei et al., 2019) Country/Ethnicity ● Chinese ● US ● US/Caucasian Family History of POAG/JOAG? ● Yes (Alward et al., 1998; Lei et al., 2019; Stone et al., 1997; Wiggs et al., 1998; Yang et al., 2020) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006; Jacobson et al., 2001; Vollrath & Liu, 2006) ○ 0.2% of WT (Zadoo et al., 2016) ● 30 °C ○ −/+ (Vollrath & Liu, 2006; Zadoo et al., 2016) Triton X-100 Solubility Assay ● Insoluble (Hogewind et al., 2007; Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm=40.3 °C (Donegan et al., 2012) or 41.4 °C (Burns et al., 2011), buffer dependent |
Location ● Blade D, near disulfide bond Interactions ● Side chain forms H-bonding interaction with NH of Leu248 in Blade E Predicted consequence of substitution ● Deleterious, His is too small to form inter-blade interaction |
n/a | ● Detailed histochemical comparison
between human donor eyes expressing myocilinY437H or
myocilinWT (van der
Heide et al., 2018) ● Mouse models with different genetic backgrounds have differing phenotypes (Chou, Tomarev, & Porciatti, 2014; Gould et al., 2006; Joe, Nakaya, Abu-Asab, & Tomarev, 2015; Kasetti, Phan, Millar, & Zode, 2016; Lynch et al., 2018; McDowell et al., 2012; Senatorov et al., 2006; Shepard et al., 2007; Zhuo et al., 2008; Zillig, Wurm, Grehn, Russell, & Tamm, 2005; Zode et al., 2011) ● Aggregated OLFY437H has amyloid character (Orwig et al., 2012) |
||
p.Ile477Asn c.1430T>A |
Diagnosis ● JOAG (Richards, 1998; Rozsa et al., 1998; Shimizu et al., 2000) ● POAG (Alward et al., 1998; Fingert et al., 1999; Shimizu et al., 2000) ● Country/Ethnicity ● US ● US/Caucasian Family History of POAG/JOAG? ● Yes (Alward et al., 1998; Richards, 1998; Rozsa et al., 1998; Shimizu et al., 2000; Stokes, 1940) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006; Vollrath & Liu, 2006) ● 30 °C ○ - (Gobeil et al., 2006; Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Shimizu et al., 2000; Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm=37.7 °C (Burns et al., 2011) or 39.7 °C (Donegan et al., 2012), buffer dependent |
Location ● Blade E, innermost strand, part of hydrophobic belt Interactions ● Side chain hydrophobic packing, main chain carbonyl is ligand to Ca2+ Predicted consequence of substitution ● Deleterious, new polarity in hydrophobic environment |
See p.Ile477Ser | n/a | ||
p.Ile477Ser c.1430T>G |
Diagnosis ● POAG (Adam et al., 1997) Country/Ethnicity ● French Family History of POAG/JOAG? ● Yes (Adam et al., 1997) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Izumi et al., 2003; Jacobson et al., 2001; Vollrath & Liu, 2006) ● 30 °C ○ +++ (Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm = 40.1 °C (Donegan et al., 2012) or 41.9 °C (Burns et al., 2011), buffer dependent |
Location ● Blade E, innermost strand, part of hydrophobic belt Interactions ● Side chain hydrophobic packing, main chain carbonyl is ligand to Ca2+ Predicted consequence of substitution ● Deleterious, new polarity in hydrophobic environment |
See p.Ile477Asn | n/a | ||
p.Tyr479His c.1435T>C |
Diagnosis ● POAG (Lopez-Martinez et al., 2007; Millá et al., 2013) Country/Ethnicity ● Spanish Family History of POAG/JOAG? ● Yes (Millá et al., 2013) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ −/+ (Lopez-Martinez et al., 2007) ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a (Z. Zhou & Vollrath, 1999) |
n/a | Location ● Blade E, innermost strand, near bottom face Interactions ● Tyr479 side chain forms short (2.6 Å) H-bonding interaction with Glu385, located on Blade C, otherwise in hydrophobic environment Predicted consequence of substitution ● Deleterious, His is too small to form interaction with Glu385, and Glu385Ala is misfolded (Donegan et al., 2012), indicating the H-bonding interaction is important. |
n/a | ● MyocilinY479H accumulates in ER (Lopez-Martinez et al., 2007) | ||
p.Asn480Lys c.1440C>A,G |
Diagnosis ● JOAG (Brézin et al., 1998; Mimivati, Nurliza, Marini, & Liza-Sharmini, 2014; Rose et al., 2011) ● POAG (Adam et al., 1997; Brézin et al., 1998; Guevara-Fujita et al., 2008; Hulsman et al., 2002; Melki, Belmouden, et al., 2003) Country/Ethnicity ● Andean ● Malay ● French ● Dutch ● Indian Family History of POAG/JOAG? ● Yes (Adam et al., 1997; Brézin et al., 1998; Guevara-Fujita et al., 2008; Hulsman et al., 2002; Mimivati et al., 2014; Rose et al., 2011) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ● – (Gobeil et al., 2006)/+(Vollrath & Liu, 2006) ● 30 °C ● + (Gobeil et al., 2006)/++(Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Insoluble (Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm=42.4 °C (Donegan et al., 2012) or 46.1 °C (Burns et al., 2011), buffer dependent |
Location ● Blade E, on β-turn between internal strands, side chain buried Interactions ● Asn480 side chain forms polar interactions with main chain NH of Leu483 and Glu483 Predicted consequence of substitution ● Deleterious, buried point charge unfavorable |
n/a | ● One individual is compound heterozygous for Asn480Lys and Thr353Ile (Rose et al., 2011) | ||
p.Pro481Thr c.1441C>A |
Diagnosis ● POAG (Fingert et al., 1999) ● JOAG (Alward et al., 2002) Country/Ethnicity ● US Family History of POAG/JOAG? ○ n/a gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
Location ● Blade E, on β-turn between internal strands, side chain buried Interactions ● Pro481 forms H-bonding interaction to Lys484 Nε in same loop Predicted consequence of substitution ● Deleterious, removal of constraint within β-turn |
● See p.Pro481Leu ● p.Pro481Arg (c.1442C>G) (Jansson et al., 2003) ● Likely deleterious to structure ● p.Pro481Ser (c.1441C>T) (Mabuchi et al., 2001) ● gnomAD: allele count 1, frequency 3.98e-6 ● Uncertain |
n/a | |||
p.Pro481Leu c.1442C>T |
Diagnosis ● POAG (Faucher et al., 2002; Fingert et al., 1999) ● OHT (Faucher et al., 2002) ● Angle Closure Glaucoma (Faucher et al., 2002) Country/Ethnicity ○ African American ● Canadian Family History of POAG/JOAG? ● Ye s(Faucher et al., 2002) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006) ● 30 °C ○ ++ (Gobeil et al., 2006) Triton X-100 Solubility Assay ○ n/a |
Destabilized ○ Tm= 45.5 °C (Donegan et al., 2012) or 46.6 °C (Burns et al., 2011), buffer dependent |
Location ● Blade E, on β-turn between internal strands, side chain buried Interactions ● Pro481 forms H-bonding interaction to Lys484 N in same loop Predicted consequence of substitution ● Deleterious, removal of constraint within β-turn |
See p.Pro481Thr | n/a | ||
p.Ile499Phe c.1495A>T |
Diagnosis ● POAG (Adam et al., 1997; Melki, Belmouden, et al., 2003) Country/Ethnicity ● French Family History of POAG/JOAG? ● Yes (Adam et al., 1997) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006)/+ (Vollrath & Liu, 2006) ● 30 °C ○ +++ (Gobeil et al., 2006; Vollrath & Liu, 2006) Triton X-100 Solubility Assay ● Partially Insoluble (Z. Zhou & Vollrath, 1999) |
Destabilized ○ Tm =42.8°C (Donegan et al., 2012) or 44.4°C (Burns et al., 2011), buffer dependent |
Location ● Blade E, exterior strand, side chain buried in hydrophobic belt Interactions ● Hydrophobic Predicted consequence of substitution ● Deleterious, side chain to large |
See p.Ile499Ser | n/a | ||
p.Ile499Ser c.1496T>G |
Diagnosis ● JOAG (Shimizu et al., 2000) Country/Ethnicity ● US/Caucasian Family History of POAG/JOAG? ● Yes (Shimizu et al., 2000) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ● Insoluble (Shimizu et al., 2000) |
Likely destabilized ○ n/a (but see Ile499Phe) |
Location ● Blade E, exterior strand, side chain buried in hydrophobic belt Interactions ● Hydrophobic Predicted consequence of substitution ● Deleterious, new polarity in hydrophobic environment |
See p.Ile499Phe | n/a | ||
p.Ser502Pro c.1504T>C |
Diagnosis ● JOAG (Stoilova et al., 1998) Country/Ethnicity ● English Family History of POAG/JOAG? ● Yes (Stoilova et al., 1998) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Gobeil et al., 2006) ● 30 °C ○ - (Gobeil et al., 2006) Triton X-100 Solubility Assay ○ n/a |
Destabilized ○ Tm= 41.0 °C (Donegan et al., 2012) or 43.0 °C (Burns et al., 2011), buffer dependent |
Location ● Blade E, molecular clasp, surface exposed Interactions ● Main chain to Glu247 Predicted consequence of substitution ● Deleterious, new backbone constraint |
n/a | ● Adenovirus-injected myocilinS502P into mouse eyes did not result in IOP elevation (Shepard et al., 2007) | ||
C. Likely Pathogenic | ||||||||
Variant | Clinical Data | Cell Assays | Thermal Stability | Structure Analysis | Additional Variants | Other | ||
p.Val251Ala c.752T>C |
Diagnosis ● JOAG (Kuchtey, Chowdhury, Uptegraft, Fautsch, & Kuchtey, 2013; Lu et al., 2020; K. Michels-Rautenstrauss et al., 2002) ● POAG (Lu et al., 2020) ● OHT (Lu et al., 2020) Country/Ethnicity ● German ● Chinese ● US/Caucasian Family History of POAG/JOAG? ● Yes (Kuchtey et al., 2013; Lu et al., 2020; K. Michels-Rautenstrauss et al., 2002) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade E, molecular clasp, side chain pointed inward toward hydrophobic belt Interactions ● None Predicted consequence of substitution ● Uncertain, Val to Ala substitution is conservative, but weaker hydrophobic packing |
● p.Val251Ile
(c.751G>A) ○ gnomAD: allele count 1, allele frequency 4.14e-6 ○ Likely deleterious to structure |
● MyocilinV251A was not found in the aqueous humor of a patient with JOAG (Kuchtey et al., 2013) | ||
p.Pro254Arg c.761C>G |
Diagnosis ● JOAG (Yang et al., 2015) ● POAG (Yang et al., 2015) Country/Ethnicity ● Chinese Family History of POAG/JOAG? ● Yes (Yang et al., 2015) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade E, molecular clasp Interactions ● Main chain carbonyl forms polar interactions with Arg470, located on an opposing loop that connects Blade D and Blade E Predicted consequence of substitution ● Deleterious, would remove backbone restriction in molecular clasp and side chain too large |
● p.Pro254Leu (c.761C>T) (Souzeau et al.,
2016) ○ Likely deleterious to structure |
n/a | ||
p.Leu255Pro c.764T>C |
Diagnosis ● JOAG (Park et al., 2016) Country/Ethnicity ● Korean Family History of POAG/JOAG? ● Yes (Park et al., 2016) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade E, outer strand, surface exposed Interactions ● Main chain H-bonds with Thr496 main chain Predicted consequence of substitution ● Deleterious, would introduce di-proline motif, further limiting the polypeptide backbone mobility |
● p.Leu255Val
(c.763G>C) ○ gnomAD: allele count 3, allele frequency 1.23e-5 ○ Uncertain |
n/a | ||
p.Pro274Arg c.821C>G |
Diagnosis ● JOAG (Markandaya et al., 2004) Country/Ethnicity ● Indian Family History of POAG/JOAG? ● Yes (Markandaya et al., 2004) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade A, loop connecting innermost strands Interactions ● None Predicted consequence of substitution ● Deleterious, Arg would remove restrictions placed on polypeptide backbone and also disrupt packing |
● p.Pro274Leu
(c.821C>T) ○ gnomAD: allele count 1, allele frequency 4e-6 ○ Likely deleterious to structure |
● Youngest family member homozygous for mutation(Markandaya et al., 2004) | ||
p.Gln337Arg ● c.1010A>G |
Diagnosis ● JOAG (Gupta et al., 2020; Stoilova et al., 1997) Country/Ethnicity ● Scottish ● Indian Family History of POAG/JOAG? ● Yes (Gupta et al., 2020) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade B, loop connecting inner strands Interactions ● Main chain carbonyl forms polar contact with Glu323 main chain NH ● Side chain forms polar contact with main chain carbonyl of Ser341 Predicted consequence of substitution ● Deleterious, sterically incompatible |
● See p.Gln337*
(c.1009delC) ● p.Gln337Glu (c.1009C>G) (Vázquez et al., 2009) ○ Likely deleterious to structure ● p.Gln337His (c.1011G>T) ○ gnomAD: allele count 1, allele frequency 3.98e-6 ○ Likely deleterious to structure |
● Homozygous individuals identified in two families (Gupta et al., 2020) | ||
p.Ser341Pro c.1021T>C |
Diagnosis ● JOAG (X. Huang et al., 2014) ● POAG (X. Huang et al., 2014; Kee & Ahn, 1997; Moon, Kim, & Lee, 2020; F. Wang et al., 2015) ● OHT (F. Wang et al., 2015) Country/Ethnicity ● Chinese ● Korean Family History of POAG/JOAG? ● Ye s(X. Huang et al., 2014; Kee & Ahn, 1997; Moon et al., 2020; F. Wang et al., 2015) ● No (X. Huang et al., 2014) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade B, turn between internal strands Interactions ● Main chain carbonyl forms polar contact with Gln337 side chain, main chain NH forms polar contact with carbonyl of Gly338 ● Side chain hydroxyl forms polar interactions with NH Thr343 and CO Gly338 Predicted consequence of substitution ● Deleterious, restrict backbone and reduce available stabilizing interactions |
n/a | n/a | ||
p.Ala363Thr c.1087G>A |
Diagnosis ● POAG (Ishikawa et al., 2004; R. Kubota et al., 2000; Mengkegale et al., 2008) Country/Ethnicity ● Japanese Family History of POAG/JOAG? ● Yes (R. Kubota et al., 2000; Ryo Kubota et al., 1997; Mengkegale et al., 2008) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ - (Izumi et al., 2003) ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Long loop between Blade B and Blade C, pointed inward Interactions ● Main chain NH forms polar contact with carbonyl Ile360, main chain carbonyl forms polar contact with side chain Arg342 Predicted consequence of substitution ● Uncertain, relatively conservative substitution but introduces new polarity into relatively hydrophobic region |
n/a | n/a | ||
p.Phe369Leu c.1105T>C |
Diagnosis ● JOAG (Hamanaka et al., 2017) ● POAG (Hamanaka et al., 2017; Ishikawa et al., 2004) Country/Ethnicity ● Japanese Family History of POAG/JOAG? ● Yes (Hamanaka et al., 2017; Ishikawa et al., 2004) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Long loop between Blade B and Blade C, surface exposed Interactions ● Main chain carbonyl makes polar contact with Lys423 Nε Predicted consequence of substitution ● Uncertain, Phe369 protects Lys423 from solvent, unclear if Leu would suffice |
n/a | ● One patient homozygous for variant
(Hamanaka et al.,
2017) ● Detailed histochemical analysis (Hamanaka et al., 2017) |
||
p.Tyr371Asp c.1111T>G |
Diagnosis ● JOAG (Avisar et al., 2009) Country/Ethnicity ● Uzbek Family History of POAG/JOAG? ● Yes (Avisar et al., 2009) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Long loop between Blade B and Blade C, points inward Interactions ● Main chain NH forms polar contact with side chain hydroxyl of Thr377; carbonyl forms polar contact with main chain NH of Trp373 ● Side chain ring forms cation-π with Lys423 and hydroxyl forms polar interaction with Asp380 Predicted consequence of substitution ● Deleterious, based on analogy with Lys423Glu |
n/a | n/a | ||
p.Glu385Lys c.1153G>A |
Diagnosis ● JOAG (Criscione et al., 2019) Country/Ethnicity ● Hispanic Family History of POAG/JOAG? ● Ye s(Avisar et al., 2009; Criscione et al., 2019) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
Likely destabilized ○ Tm= 39.7 °C for OLFE385A (Donegan et al., 2012) |
Location ● Blade C, bottom face, on turn between innermost blades Interactions ● Side chain forms polar contacts with main chain NH of Cys433 on Blade D, and with sidechains of Tyr 479 and Lys484 on Blade E Predicted consequence of substitution ● Deleterious, critical interactions would be lost |
n/a | n/a | ||
p.Thr438Ile c.1313C>T |
Diagnosis ● JOAG (Jansson et al., 2003; Melki, Belmouden, et al., 2003; Souzeau et al., 2015) Country/Ethnicity ● Australian ● French ● Danish Family History of POAG/JOAG? ● Yes (Jansson et al., 2003; Melki, Belmouden, et al., 2003; Souzeau et al., 2015) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade D, interior strand Interactions ● Side chain hydroxyl group forms polar interaction with Asn450 sidechain Predicted consequence of substitution ● Deleterious, polar intra-blade contact would be lost |
● p.Thr438Pro
(c.1312A>C) ○ gnomAD: allele count 6, allele frequency 2.39e-5 ○ Likely deleterious to structure |
n/a | ||
p.Asn450Tyr c.1348A>T |
Diagnosis ● JOAG (Zhao et al., 2010) ● OHT (Zhao et al., 2010) Country/Ethnicity ● Chinese Family History of POAG/JOAG? ● Yes (Zhao et al., 2010) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade D, interior strand, points to surface Interactions ● Side chain forms polar contact with Thr438 side chain hydroxyl Predicted consequence of substitution ● Deleterious, Tyr would pose a steric challenge with the loop connecting Blade C and Blade D |
● p.Asn450Asp (c.1348A>G) (K. Michels-Rautenstrauss et al.,
2002) ○ Likely tolerated in the structure ● p.Asn450Ser (c.1349A>G) ○ gnomAD: allele count 2, allele frequency 7.95e-6 ○ Likely tolerated in the structure |
n/a | ||
p.Leu486Phe ● c.1456C>T |
Diagnosis ● JOAG (Liao et al., 2016) ● POAG (X. Huang et al., 2014) Country/Ethnicity ● Chinese Family History of POAG/JOAG? ● Ye s(Liao et al., 2016) ● No (X. Huang et al., 2014) gnomAD? ○ n/a |
Secretion Assay ● 37 °C ○ n/a ● 30 °C ○ n/a Triton X-100 Solubility Assay ○ n/a |
n/a | Location ● Blade E, inner strand, pointed inward Interactions ● Main chain NH forms polar interaction with Thr496 sidechain; main chain carbonyl forms polar contact with carbonyl of Tyr497 Predicted consequence of substitution ● Deleterious, would require rearrangements to fit larger side chain |
n/a | n/a |
qualitative extent of secretion − = no secretion, −/+ = very little secretion, +, ++, +++ increasing levels of secretion