{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T06:42:55Z","timestamp":1789454575132,"version":"build-2803163510"},"reference-count":32,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T00:00:00Z","timestamp":1772928000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004826","name":"Beijing Natural Science Foundation","doi-asserted-by":"publisher","award":["7232192"],"award-info":[{"award-number":["7232192"]}],"id":[{"id":"10.13039\/501100004826","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Background: Senior\u2013Loken syndrome (SLS) is a rare autosomal recessive ciliopathy classically defined by the concurrence of nephronophthisis, frequently progressing to end-stage renal disease (ESRD), and retinal dystrophy, most commonly presenting as retinitis pigmentosa (RP). Given its phenotypic overlap with other renal\u2013retinal syndromes, establishing a definitive diagnosis necessitates integrated clinical evaluation and molecular confirmation. Case Presentation: A 28-year-old Chinese female presented with a two-month history of binocular floaters. Her medical history was significant for ESRD of five years\u2019 duration, managed with maintenance hemodialysis. Ophthalmic assessment revealed retinal pigment mottling along the inferior temporal arcades and generalized arterial attenuation. Spectral-domain optical coherence tomography demonstrated outer retinal thinning with loss of the ellipsoid zone at corresponding locations. Perimetry confirmed visual field constriction, and full-field electroretinography showed severely reduced rod- and cone-mediated responses. Genetic testing was performed and a pathogenic variant in the NPHP1 gene was identified. Segregation studies confirmed both parents as heterozygous carriers, consistent with autosomal recessive inheritance. Collectively, these findings established a diagnosis of SLS. Conclusions: This case reinforces that SLS should be considered in the differential diagnosis of any young patient exhibiting RP alongside chronic kidney disease, particularly in the setting of early-onset ESRD. It also illustrates the essential role of a coordinated, multidisciplinary approach\u2014encompassing nephrology, ophthalmology, and genetics\u2014in diagnosing complex ciliopathies. Genetic confirmation not only validates the clinical diagnosis but also provides a foundation for family counseling, prognostic stratification, and future eligibility for gene-specific therapeutic trials.<\/jats:p>","DOI":"10.3390\/jcm15052060","type":"journal-article","created":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T08:58:45Z","timestamp":1773046725000},"page":"2060","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Systemic and Ocular Manifestations of a Ciliopathy: A Case Report of Renal\u2013Retinal Involvement in Senior\u2013Loken Syndrome"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-6764-1269","authenticated-orcid":false,"given":"Muzi","family":"Li","sequence":"first","affiliation":[{"name":"Department of Ophthalmology, Peking University People\u2019s Hospital, Beijing 100044, China"},{"name":"Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing 100044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siying","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Peking University People\u2019s Hospital, Beijing 100044, China"},{"name":"Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing 100044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Cao","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Peking University People\u2019s Hospital, Beijing 100044, China"},{"name":"Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing 100044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aimin","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Peking University People\u2019s Hospital, Beijing 100044, China"},{"name":"Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing 100044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinfeng","family":"Qu","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Peking University People\u2019s Hospital, Beijing 100044, China"},{"name":"Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing 100044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,8]]},"reference":[{"key":"ref_1","first-page":"MD04","article-title":"Senior-loken syndrome\u2014A ciliopathy","volume":"8","author":"Hemachandar","year":"2014","journal-title":"J. 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