R. Alagappan

4.5k total citations · 2 hit papers
16 papers, 3.5k citations indexed

About

R. Alagappan is a scholar working on Genetics, Molecular Biology and Reproductive Medicine. According to data from OpenAlex, R. Alagappan has authored 16 papers receiving a total of 3.5k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Genetics, 10 papers in Molecular Biology and 7 papers in Reproductive Medicine. Recurrent topics in R. Alagappan's work include Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities (13 papers), Sperm and Testicular Function (7 papers) and Sexual Differentiation and Disorders (5 papers). R. Alagappan is often cited by papers focused on Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities (13 papers), Sperm and Testicular Function (7 papers) and Sexual Differentiation and Disorders (5 papers). R. Alagappan collaborates with scholars based in United States, Finland and Netherlands. R. Alagappan's co-authors include Renee A. Reijo Pera, David C. Page, Laura Brown, Steve Rozen, Sherman J. Silber, David C. Page, Pasquale Patrizio, Albert de la Chapelle, Michael A. Rosenberg and Outi Hovatta and has published in prestigious journals such as Cell, The Lancet and Nature Genetics.

In The Last Decade

R. Alagappan

16 papers receiving 3.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Diverse spermatogenic defects in humans caused by Y chromosome deletions encompassing a novel RNA–binding protein gene

1995 968 citations Renee A. Reijo Pera, Pia Salo et al. Nature Genetics profile →
Generation of Isogenic Pluripotent Stem Cells Differing Exclusively at Two Early Onset Parkinson Point Mutations

2011 555 citations Frank Soldner, Josée Laganière et al. Cell profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
R. Alagappan United States	14	2.6k	2.5k	1.6k	519	328	16	3.5k
John Gubbay United Kingdom	8	2.4k 0.9×	2.9k 1.2×	978 0.6×	303 0.6×	273 0.8×	10	3.5k
J. Ross Hawkins United Kingdom	22	3.1k 1.2×	3.5k 1.4×	1.1k 0.7×	444 0.9×	232 0.7×	42	4.4k
Linda L. Washburn United States	27	1.8k 0.7×	2.0k 0.8×	758 0.5×	145 0.3×	266 0.8×	41	2.5k
Ryohei Sekido United Kingdom	25	3.0k 1.2×	2.9k 1.2×	1.1k 0.7×	170 0.3×	486 1.5×	30	4.2k
Christopher S. Raymond United States	11	1.4k 0.5×	1.9k 0.8×	608 0.4×	229 0.4×	136 0.4×	19	2.5k
L. Tiepolo Italy	24	1.6k 0.6×	1.8k 0.7×	625 0.4×	677 1.3×	147 0.4×	73	2.6k
Adam Hacker United Kingdom	11	2.5k 1.0×	1.8k 0.7×	648 0.4×	117 0.2×	209 0.6×	17	3.2k
Pascal Bernard France	28	2.2k 0.8×	812 0.3×	285 0.2×	611 1.2×	149 0.5×	56	2.7k
Bernhard Payer United States	24	3.1k 1.2×	1.2k 0.5×	188 0.1×	219 0.4×	488 1.5×	38	3.9k
Shantha K. Mahadevaiah United Kingdom	23	2.4k 0.9×	1.1k 0.4×	399 0.3×	776 1.5×	502 1.5×	31	3.0k

Countries citing papers authored by R. Alagappan

Since Specialization

Citations

This map shows the geographic impact of R. Alagappan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by R. Alagappan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. Alagappan more than expected).

Fields of papers citing papers by R. Alagappan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R. Alagappan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by R. Alagappan. The network helps show where R. Alagappan may publish in the future.

Co-authorship network of co-authors of R. Alagappan

This figure shows the co-authorship network connecting the top 25 collaborators of R. Alagappan. A scholar is included among the top collaborators of R. Alagappan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with R. Alagappan. R. Alagappan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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16 of 16 papers shown

Soldner, Frank, Josée Laganière, Albert Cheng, et al.. (2011). Generation of Isogenic Pluripotent Stem Cells Differing Exclusively at Two Early Onset Parkinson Point Mutations. Cell. 146(2). 318–331. 555 indexed citations breakdown →

Söldner, F., Josée Laganière, Albert Cheng, et al.. (2011). Generation of Isogenic Pluripotent Stem Cells Differing Exclusively at Two Early Onset Parkinson Point Mutations. Cell. 146(4). 659–659. 21 indexed citations

Lengner, Christopher J., Alexander A. Gimelbrant, Jennifer A. Erwin, et al.. (2010). Derivation of Pre-X Inactivation Human Embryonic Stem Cells under Physiological Oxygen Concentrations. Cell. 141(5). 872–883. 303 indexed citations

Rozen, Steve, Janet D. Marszalek, R. Alagappan, Helen Skaletsky, & David C. Page. (2009). Remarkably Little Variation in Proteins Encoded by the Y Chromosome's Single-Copy Genes, Implying Effective Purifying Selection. The American Journal of Human Genetics. 85(6). 923–928. 39 indexed citations

Saxena, Richa, Jan W. A. de Vries, Sjoerd Repping, et al.. (2000). Four DAZ Genes in Two Clusters Found in the AZFc Region of the Human Y Chromosome. Genomics. 67(3). 256–267. 181 indexed citations

Schwartz, Ann G., David C. Chan, Laura G. Brown, et al.. (1998). Reconstructing hominid Y evolution: X-homologous block, created by X-Y transposition, was disrupted by Yp inversion through LINE--LINE recombination. Human Molecular Genetics. 7(1). 1–11. 94 indexed citations

Mulhall, John P., Renee A. Reijo Pera, R. Alagappan, et al.. (1998). Azoospermic Men With Deletion of the DAZ Gene Cluster are Capable of Completing Spermatogenesis: Fertilization, Normal Embryonic Development and Pregnancy Occur When Retrieved Testicular Spermatozoa are Used for Intracytoplasmic Sperm Injection. The Journal of Urology. 159(2S). 609–609. 1 indexed citations

Silber, Sherman J., R. Alagappan, Laura Brown, & David C. Page. (1998). Y chromosome deletions in azoospermic and severely oligozoospermic men undergoing intracytoplasmic sperm injection after testicular sperm extraction. Human Reproduction. 13(12). 3332–3337. 135 indexed citations

Mulhall, John P., Renee A. Reijo Pera, R. Alagappan, et al.. (1997). Azoospermic men with deletion of the DAZ gene cluster are capable of completing spermatogenesis: fertilization, normal embryonic development and pregnancy occur when retrieved testicular spermatozoa are used for intracytoplasmic sperm injection. Human Reproduction. 12(3). 503–508. 140 indexed citations

10.

Saxena, Richa, Laura Brown, Trevor Hawkins, et al.. (1996). The DAZ gene cluster on the human Y chromosome arose from an autosomal gene that was transposed, repeatedly amplified and pruned. Nature Genetics. 14(3). 292–299. 355 indexed citations

11.

Pera, Renee A. Reijo, R. Alagappan, David C. Page, & Pasquale Patrizio. (1996). Severe oligozoospermia resulting from deletions of azoospermia factor gene on Y chromosome. The Lancet. 347(9011). 1290–1293. 418 indexed citations

12.

Pera, Renee A. Reijo, R. Alagappan, Pasquale Patrizio, & David C. Page. (1996). Severe Oligozoospermia Resulting From Deletions of Azoospermia Factor Gene on Y Chromosome. Obstetrical & Gynecological Survey. 51(11). 675–676. 3 indexed citations

13.

Pera, Renee A. Reijo, T.-Y. Lee, Paula Salo, et al.. (1996). Diverse spermatogenic defects in humans caused by Y chromosome deletions encompassing a novel RNA-binding protein gene. Human Reproduction. 11(suppl 4). 27–54. 199 indexed citations

14.

Pera, Renee A. Reijo, Pia Salo, R. Alagappan, et al.. (1995). Diverse spermatogenic defects in humans caused by Y chromosome deletions encompassing a novel RNA–binding protein gene. Nature Genetics. 10(4). 383–393. 968 indexed citations breakdown →

15.

Zinn, Andrew R., R. Alagappan, Laura G. Brown, Ira G. Wool, & David C. Page. (1994). Structure and Function of Ribosomal Protein S4 Genes on the Human and Mouse Sex Chromosomes. Molecular and Cellular Biology. 14(4). 2485–2492. 24 indexed citations

16.

Zinn, Andrew R., R. Alagappan, Laura G. Brown, Ira G. Wool, & David C. Page. (1994). Structure and function of ribosomal protein S4 genes on the human and mouse sex chromosomes.. Molecular and Cellular Biology. 14(4). 2485–2492. 68 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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