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. 2021 Aug 31;12(6):342–350. doi: 10.1159/000517253

Table 1.

Clinical features of reported Hamamy syndrome patients

Current study
Roukoz et al. [2019]
Family 1
Hamamy et al. [2007]
Bonnard et al. [2012]
Banna and Hassona [2018]
Family 2
Bonnard et al. [2012]
Buget et al. [2015]
Family 3
Guler and Keskin [2014]
Duman et al. [2020]
Patient 1 Patient 2 Patient 1 Patient 2 Patient 3 Patient 4 Patient 5 Patient 6 Patient 7
Patient Details
Gender Female Male Male Male Female Male Male Male Male
Origin Lebanon Lebanon Jordan Jordan Jordan Turkey Turkey Turkey Turkey
IRK5 mutation c.503G>A c.503G>A c.498C>A c.498C>A c.498C>A c.448G>C (p.Ala150Pro) c.448G>C NR NR
(p.Arg168His) (p.Arg168His) (p.Asn166Lys) (p.Asn166Lys) (p.Asn166Lys) (p.Ala150Pro)

CNS features
Developmental delay + + + + + ND + NR NR
Intellectual disability ++ + + + + ND + NR NR
Unclear speech Few words + + + ND + NR NR

Craniofacial features
Telecanthus ++ ++ ++ ++ ++ ++ ++ NR NR
Brachycephaly + + + + + NR NR
Craniosynostosis ? + + + NR NR
Low posterior hair line ? + + + + + NR NR
Micrognathia ? + + + NR NR
Midface prominence + + + + + + + NR NR
Prominent forehead + NR NR NR NR NR NR NR
Smooth philtrum + + + + + + + NR NR
Broad nasal bridge + + + + + + + NR NR
Abnormal nasolacrimal ducts + + + + + ND + NR NR
Myopia ? Yes, but more + + ND + NR NR
astigmatism
Astigmatism ? + NR NR NR NR NR NR NR
Blepharophimosis + + NR NR NR NR NR NR NR
Sparse eyebrows/eyelashes +/NR +/NR +/NR +/NR +/NR NR/NR NR/NR
Sparse hair + + NR NR NR NR NR NR NR
Sensorineural hearing loss + + + + ND + NR NR
Low-set ears ? + + + + + + NR NR
Abnormal ears + + + + + + + NR NR
Thin upper lip + + + + + + NR NR
Everted lower lip + + NR NR NR NR NR NR NR
Large mouth + + + + + + + NR NR
Worn-out teeth with discoloration + + NR NR + ND + + +
Enamel hypoplasia + + + + + ND + + +

Skeletal features
Long bone fractures + + + + + ND + NR NR
Pterygium colli/sloping shoulders + + + + + NR NR
Osteopenia ? + + + + ND NR NR

Genital features
Inguinal hernia + + + + + NR NR
Cryptorchidism NA + + + NA + + NR NR

Cardiac features
Intraventricular conduction delay + + + ND + NR NR
Other cardiovascular defects Tiny patent ductus arteriosus Mild mitral regurgitation Atrial septal defect Total artrioventricular canal NR NR NR

NR, not reported; ND, not determined due to early death; NA, not applicable; ++, severe; +, present; −, absent.